Ryokan with an open-air bath in the room in Kanagawa
Stays in Kanagawa where you can soak in an onsen bath on your own room’s terrace.
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Stays in Kanagawa
71 stays
Yoshiike Ryokan
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
塩Chloride Spring · Alkaline (pH 7.5+) · Free-flowing
pH 8.1See the spring data ›Sources & details
- Tattoos OK if covered
- Analysis report on file
- Free-flowing (posted notice)
- Tattoo rule checked Oct 2026
Spring type: Sodium-Calcium Chloride Hot Spring / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 77.8 mg/kg
Source: in-room bath (yoshiike.org) · private bath (yoshiike.org) · tattoo rule (yoshiike.org) · Checked May 30, 2026
Kiritani Hakoneso
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
酸Acidic Spring · Chloride spring · Free-flowing
pH 2.1See the spring data ›Sources & details
- Analysis report on file
- Free-flowing (posted notice)
Spring type: Acidic Calcium Sulfate and Chloride Hot Spring / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 157 mg/kg
Source: in-room bath (kiritani-hakoneso.com) · private bath (travel.rakuten.co.jp) · Checked May 31, 2026
Tonosawa Onsen Motoyu Kansuiro
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
単Simple Spring · Alkaline (pH 7.5+) · Free-flowing
pH 8.8See the spring data ›Sources & details
- Analysis report on file
- Free-flowing (posted notice)
Spring type: Alkaline Simple Hot Spring / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 51.5 mg/kg
Source: in-room bath (vertexaisearch.cloud.google.com) · private bath (vertexaisearch.cloud.google.com) · Checked May 30, 2026
Hakone Yumoto Onsen Hakone Suimeiso
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
単Simple Spring · Alkaline (pH 7.5+) · Free-flowing
pH 8.5See the spring data ›Sources & details
- Analysis report on file
- Free-flowing (posted notice)
Spring type: Alkaline Simple Hot Spring / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 70.6 mg/kg
Source: in-room bath (hakone.or.jp) · private bath (hakone.or.jp) · Checked May 30, 2026
Sengokuhara Onsen Senkyoro
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
酸Acidic Spring · Chloride spring · Free-flowing
pH 2.1See the spring data ›Sources & details
- Analysis report on file
- Free-flowing (posted notice)
Spring type: Acidic Calcium Sulfate and Chloride Hot Spring / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 157 mg/kg
Source: in-room bath (jalan.net) · private bath (travel.rakuten.co.jp) · Checked May 31, 2026
Hakone Yumoto Onsen Hakone Kamon
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
塩Chloride Spring · Alkaline (pH 7.5+) · Free-flowing
pH 8.3See the spring data ›PRIncludes affiliate linksView rates on Trip.comSources & details
- Analysis report on file
- Free-flowing (posted notice)
Spring type: Sodium-Calcium Chloride and Sulfate Hot Spring / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 62.6 mg/kg
Source: in-room bath (hakone-kamon.jp) · private bath (hakone-kamon.jp) · Checked May 30, 2026
Shiki no Yuzashiki Musashino Bekkan
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
塩Chloride Spring · Alkaline (pH 7.5+) · Free-flowing
pH 8.1See the spring data ›Sources & details
- Analysis report on file
- Free-flowing (posted notice)
Spring type: Sodium Chloride Hot Spring / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 107 mg/kg
Source: in-room bath (ozmall.co.jp) · private bath (jalan.net) · Checked May 31, 2026
Sakura Kyuan Bekutei Rin
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
塩Chloride Spring · Alkaline (pH 7.5+)
pH 8.5See the spring data ›Sources & details
- Analysis report on file
- Private bath checked Oct 2026
Spring type: Sodium Chloride Hot Spring / Metasilicic acid 148 mg/kg
Source: in-room bath (travel.rakuten.co.jp) · private bath (travel.rakuten.co.jp) · Checked Oct 23, 2026
Gora Hanaougi Madoka no Mori
Hakone, Kanagawa
- Rooms with private open-air bath
- Tattoos allowed
No onsen analysis report on file yet
Sources & details
- Private bath checked Nov 2026
- Tattoo rule checked Nov 2026
Source: in-room bath (madokanomori.gorahanaougi.com) · tattoo rule (madokanomori.gorahanaougi.com)
Shotokuji Onsen Hatsuhana
Hakone, Kanagawa
- Rooms with private open-air bath
単Simple Spring · Alkaline (pH 7.5+)
pH 9.5See the spring data ›Sources & details
- Analysis report on file
- Private bath checked Oct 2026
Spring type: Alkaline Simple Hot Spring (Hypotonic Alkaline low-temperature hot spring) / Recirculated or disinfected / No water added / Metasilicic acid 126.7 mg/kg
Source: in-room bath (travel.rakuten.co.jp) · Checked May 30, 2026
Regina Resort Hakone Sengokuhara
Hakone, Kanagawa
- Rooms with private open-air bath
酸Acidic Spring · Chloride spring
pH 2.1See the spring data ›Sources & details
- Analysis report on file
- Private bath checked Oct 2026
Spring type: Acidic Calcium Sulfate and Chloride Hot Spring / Metasilicic acid 157 mg/kg
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 21, 2026
Ashikari
Yugawara, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
How to reserve the private bath塩Chloride Spring · Alkaline (pH 7.5+)
pH 8.3See the spring data ›Sources & details
- Analysis report on file
Spring type: Sodium-Calcium Chloride and Sulfate Hot Spring / Recirculated or disinfected / No water added / Metasilicic acid 97.1 mg/kg
Source: in-room bath (ashikari.com) · private bath (onsen.tabibun.net) · Checked May 31, 2026
Gora Kadan
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
単Simple Spring · Alkaline (pH 7.5+)
pH 8.4See the spring data ›Sources & details
- Analysis report on file
Spring type: Simple Hot Spring / Recirculated or disinfected / No water added / Metasilicic acid 144 mg/kg
Source: in-room bath (otonatabi-japan.com) · private bath (otonatabi-japan.com) · Checked May 31, 2026
Motoyu Jinya
Hadano, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
塩Chloride Spring · Alkaline (pH 7.5+)
pH 7.7See the spring data ›Sources & details
- Analysis report on file
Spring type: Sodium-Calcium Chloride Cold Mineral Spring / Recirculated or disinfected / Water added / Metasilicic acid 58.4 mg/kg
Source: in-room bath (jinya-inn.com) · private bath (yukoyuko.net) · Checked May 30, 2026
Hakone Gin Yu
Hakone, Kanagawa
- Rooms with private open-air bath
塩Chloride Spring · Alkaline (pH 7.5+) · Free-flowing
pH 8.4See the spring data ›Sources & details
- Analysis report on file
- Free-flowing (posted notice)
Spring type: Sodium Chloride Spring (Hypotonic Mildly alkaline high-temperature hot spring) / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 103 mg/kg
Source: in-room bath (ikyu.com) · Checked May 30, 2026
Hakone Kowakien Mikawaya Ryokan
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
単Simple Spring · Alkaline (pH 7.5+)
pH 8.4See the spring data ›Sources & details
- Analysis report on file
Spring type: Simple Hot Spring / Recirculated or disinfected / Water added / Metasilicic acid 169 mg/kg
Source: in-room bath (hakonekowakien-mikawaya.jp) · private bath (hakonekowakien-mikawaya.jp) · Checked May 30, 2026
Yururi Hakone with Dogs
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (yahoo.co.jp) · private bath (yururi-hakone.com) · Checked Oct 22, 2026
Ichinoyu Honkan
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (ichinoyu.co.jp) · private bath (travel.rakuten.co.jp) · Checked May 30, 2026
Hanachouen
Yugawara, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · private bath (travel.rakuten.co.jp)
Suugina
Yugawara, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (yunosato-sugina.com) · private bath (yunosato-sugina.com) · Checked May 31, 2026
Setsugetsuka Bettei Suiun
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · private bath (dormy-hotels.com) · Checked Oct 18, 2026
Hakone Gora Karaku
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Nov 2026
Source: in-room bath (gora-karaku.orixhotelsandresorts.com) · private bath (gora-karaku.orixhotelsandresorts.com)
Hakone Ashinoyu Matsuzakaya Honten
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (kinnotake-resorts.com) · private bath (kinnotake-resorts.com) · Checked Oct 23, 2026
Hakone Yumoto Onsen Yusakaso
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (yusaka.jp) · private bath (yusaka.jp) · Checked Oct 19, 2026
Hakone Yumoto Onsen Yaeikan
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (hakone-ryokan.or.jp) · private bath (hakone-ryokan.or.jp) · Checked Oct 19, 2026
Hakone Kyuan
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Nov 2026
Hanare no Yado Hoshi ga Yama
Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · private bath (travel.rakuten.co.jp)
Gen Hakonegoura
Hakone, Kanagawa
- Rooms with private open-air bath
塩Chloride Spring
pH 7.3See the spring data ›Sources & details
- Analysis report on file
Spring type: Sodium Chloride Hot Spring / Recirculated or disinfected / No water added / Metasilicic acid 161 mg/kg
Source: in-room bath (gen-hakone.com) · Checked May 31, 2026
Hakone Yumoto Onsen Seikanso
Hakone, Kanagawa
- Rooms with private open-air bath
単Simple Spring · Alkaline (pH 7.5+)
pH 8.7See the spring data ›Sources & details
- Analysis report on file
Spring type: Alkaline Simple Hot Spring / Metasilicic acid 52.7 mg/kg
Source: in-room bath (ikyu.com) · Checked May 31, 2026
Hakone Suishouen
Hakone, Kanagawa
- Rooms with private open-air bath
塩Chloride Spring · Alkaline (pH 7.5+)
pH 7.9See the spring data ›Sources & details
- Analysis report on file
Spring type: Sodium Chloride Hot Spring / Free-flowing, with heating, added water or filtering / Water added / Metasilicic acid 168 mg/kg
Source: in-room bath (navitime.co.jp) · Checked May 31, 2026
Hakone Kowakien Ten-yu
Hakone, Kanagawa
- Rooms with private open-air bath
塩Chloride Spring
pH 7.4See the spring data ›Sources & details
- Analysis report on file
Spring type: Sodium Chloride Hot Spring / Free-flowing, with heating, added water or filtering / Water added / Metasilicic acid 121 mg/kg
Source: in-room bath (ten-yu.com) · Checked May 31, 2026
Lime Resort Hakone
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (jalan.net) · Checked Oct 24, 2026
Auberge Hakone Fontainebleau Sengokutei
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (fontenu-hakone.com) · Checked Oct 18, 2026
Kappa Tengoku
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (kappa1059.co.jp) · private bath (hakoneyumoto.com) · Checked May 31, 2026
Hotel Green Plaza Hakone
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Nov 2026
Source: in-room bath (rlx.jp)
Hotel Shikinoyakata Hakone Ashinoko
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 23, 2026
Laforet Hakone Gora Yu no Sumika
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (laforet.co.jp) · Checked Oct 18, 2026
Libmax Resort Hakone Ashinoko
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (livemax-resort.com) · Checked Oct 19, 2026
Regina Resort Hakone Ungaisou
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 25, 2026
Tokinoyu Setsugetsuka
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (hakonenavi.jp) · private bath (yukoyuko.net) · Checked May 30, 2026
Gora Onsen Nounou Hakone
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 17, 2026
Gora Onsen Gora Hanaougi
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (gorahanaougi.com) · Checked Oct 19, 2026
Gora Onsen Nagominoyado Hanagokoro
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 21, 2026
Kinnotake Sengokuhara
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked May 31, 2026
Kinnotake Tonosawa
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Nov 2026
Miwa Yugawara
Yugawara, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Sansuiro SANSUIRO
Yugawara, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (yugawara.or.jp) · private bath (travel.yahoo.co.jp) · Checked May 31, 2026
Sengokuhara Susukinohara Ichinoyu
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (ichinoyu.co.jp) · Checked Oct 17, 2026
Sengokuhara Onsen Centurion Hakone Bettei
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 21, 2026
Yugawara Onsen Hotel Chobo Sanso
Yugawara, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Hakone Toki no Shizuku
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 24, 2026
Hakone Hoshi no Akari
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 19, 2026
Hakone Parks Yoshino
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (hakone.or.jp) · private bath (hakone.or.jp) · Checked May 31, 2026
Hakone Gora Byakudan
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 22, 2026
Hakone Goura Guam Dog Honten
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 22, 2026
Hakone Charyou Kintoki
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (booking.com) · Checked Oct 24, 2026
Hakone Yumoto Onsen Aura Tachibana
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 17, 2026
Hakone Yumoto Onsen Hotel Nanpuusou
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 17, 2026
Hakone Yumoto Onsen Kisensou
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 20, 2026
Onsen Tenseien
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
How to reserve the private bathSources & details
Source: in-room bath (travel.rakuten.co.jp) · private bath (hakoneyumoto.com) · Checked May 31, 2026
Hakone Yumoto Onsen Hakone Airu
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 20, 2026
Fujiya Hotel
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
How to reserve the private bathSources & details
Source: in-room bath (fujiyahotel.jp) · private bath (fujiyahotel.jp) · Checked May 31, 2026
Sakura Kyuan
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp) · Checked Oct 24, 2026
Seirakyuen
Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
PRIncludes affiliate linksView rates on Rakuten TravelSources & details
Source: in-room bath (nanasawa-seirakuen.com) · private bath (nanasawa-seirakuen.com) · Checked May 31, 2026
Yugawara Onsen Kappo Ryokan Uoshizu
Yugawara, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
PRIncludes affiliate linksView rates on Rakuten TravelSources & details
- Private bath checked Oct 2026
Waishin-tei Toyotsuki
Hakone, Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (hakone-hougetu.com) · private bath (hakone-hougetu.com) · Checked May 31, 2026
Inamuragasaki Onsen
Kanagawa
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (yuasobi.com) · private bath (yuasobi.com) · Checked May 30, 2026
Hakone Kinnotake Saryo
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (kinnotake-resorts.com) · Checked May 31, 2026
Yuui -YUI-
Yugawara, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (jbc-web.info) · Checked May 31, 2026
Yama no Hotel
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (hakone-hoteldeyama.jp) · Checked May 31, 2026
Hakone Retreat Villa 1/f
Hakone, Kanagawa
- Rooms with private open-air bath
No onsen analysis report on file yet
Sources & details
Source: in-room bath (hakone-retreat.com) · Checked May 31, 2026
Sorted using onsen analysis reports and what each property states on its own or booking-site page.
- Rooms with a private open-air bath
- The bath is part of your guest room (kyakushitsu rotenburo). Usually only some room types have one, so check the room type when you book.
The water in a room’s bath may come from a different source, or be heated or recirculated differently, than the shared baths. Even for stays with an analysis report, ask the property how the in-room bath is supplied.
Hokkaido & Tohoku4 towns · 24 stays
Kanto7 towns · 108 stays
Chubu17 towns · 138 stays
Kansai4 towns · 38 stays
Chugoku & Shikoku1 town · 5 stays
Kyushu & Okinawa5 towns · 76 stays
Browse by prefecture27 prefectures
A stay is listed only when its official website or booking-site page says some rooms have a private open-air bath. Usually only certain room types have one, so check the room type when you book.
- Private bath and tattoo information comes from each property's official website or other published information. Every item links to its source and shows the date we last checked it. Items we could not source are left out.
- Spring type, pH and how the water is used come from the onsen analysis report that Japanese law requires each facility to post, and from the facility's water-usage notice. They are shown only for stays whose report we have on file.
- Details can change after we check them. Please confirm with the property before you book, especially tattoo rules and private bath fees.
- Booking buttons are affiliate links. They do not affect which stays are listed.