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Onsen ryokan and hotels in Wakayama

Every onsen stay in Wakayama we can back with data: onsen analysis reports and facility details checked against the property’s own pages.

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Stays in Wakayama

10 stays

2With analysis report
1Free-flowing
7In-room open-air bath
4Reservable private bath
1Mixed bath

Spring types from the analysis reports

Bicarbonate Spring1 stay
Iron Spring1 stay
pH 6.3–7.8

Spring type and pH come from the main source of the 2 stays whose analysis report we have on file.

Narrow by how you bathe

Ryokan with private onsen9 stays Tattoo-friendly onsen ryokan9 stays Ryokan with an open-air bath in the room7 stays

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Ryujin-onsen Shimogoten
Tanabe, Wakayama
- Rooms with private open-air bath
Bicarbonate Spring · Alkaline (pH 7.5+)
pH 7.8
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Sources & details
- Analysis report on file
- Private bath checked Oct 2026
Spring type: Sodium Bicarbonate Hot Spring / Metasilicic acid 65.2 mg/kg
Source: in-room bath (shimogoten.com) · Checked May 31, 2026
Kayama Onsen Yakushi no Yu
Wakayama City, Wakayama
Iron Spring · Chloride spring · Free-flowing
pH 6.3
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Sources & details
- Analysis report on file
- Free-flowing (posted notice)
Spring type: Carbon dioxide-containing Iron (II,III) Calcium-Magnesium Chloride Hot Spring / Free-flowing from the source, with no added water, heating or recirculation / Metasilicic acid 153.3 mg/kg
Allesud Valle Shirahama
Shirahama, Wakayama
- Rooms with private open-air bath
No onsen analysis report on file yet
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Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp)
Infinito Hotel & Spa Nanki Shirahama
Shirahama, Wakayama
- Rooms with private open-air bath
No onsen analysis report on file yet
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Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp)
Kisyu Shirahama Onsen Musashi
Shirahama, Wakayama
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
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Sources & details
Source: in-room bath (yado-musashi.co.jp) · private bath (nankishirahama.jp) · Checked May 30, 2026
Yukai Resort Nanki Katsuura Onsen Koshi no Yu
Wakayama
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
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Sources & details
Source: in-room bath (youtube.com) · private bath (rurubu.travel) · Checked May 30, 2026
Nanki Shirahama Onsen Ryori Minshuku Hamabo
Shirahama, Wakayama
- Reservable private bath
No onsen analysis report on file yet
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Sources & details
- Private bath checked Oct 2026
Source: private bath (travel.rakuten.co.jp)
Shirahama Onsen Hotel Sanrakuso
Shirahama, Wakayama
- Rooms with private open-air bath
No onsen analysis report on file yet
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Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp)
Shirahama Onsen Hotel Tenzangaku Umiyutei
Shirahama, Wakayama
- Rooms with private open-air bath
No onsen analysis report on file yet
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Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp)
Tsuru no Yu Onsen
Wakayama
- Reservable private bath
No onsen analysis report on file yet
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Also onRakuten Travel
Sources & details
Source: private bath (onsen.nifty.com) · Checked May 30, 2026

Sorted using onsen analysis reports and what each property states on its own or booking-site page.

How we know

A stay is listed when we have its onsen analysis report on file, or when we checked its private open-air baths, reservable private baths or tattoo rules against its official website or booking-site page. Stays with neither are left out. Lists for each onsen town are under “More onsen towns” below.

This list includes stays whose onsen analysis report we have on file, and stays whose facility details we checked against a source. Stays with neither are left out.
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.

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