Hakoneyumotoonsen Hakonesuimeisou
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Hakoneyumotoonsen Hakonesuimeisou

水明荘
Info pending

Kanagawa Hakone

神奈川県 箱根町

Onsen RyokanFree-Flowing Onsen

AT A GLANCE

Hakoneyumotoonsen Hakonesuimeisou is a simple spring (pH 8.5, alkaline). Naturally flowing (no recycling or dilution). Contains ≥50 mg/kg of metasilicic acid, certified as a beauty spring. Per Japan's Ministry of the Environment guidelines, indicated for autonomic disorder, insomnia, and fatigue recovery.

SOURCES
♨Hakone-Yumoto Onsen (Suimeiso)
箱根湯本温泉（水明荘）
Alkaline Simple Hot Spring
単
Simple SpringpH 8.545.2℃
See effects, components & details

If a source spring listed for this facility looks incorrect, please contact us.

How Long to Stay (Toji)
Start with 2 nights / 3 days

Japan’s Ministry of the Environment notes that even a short stay refreshes you. For a full therapeutic cure, around 2–3 weeks is the guideline.

More on toji length
Stay at this hotel
PR

Hakoneyumotoonsen Hakonesuimeisou

From¥14,850/ person / night (tax incl.)
4.3(701)

Approx. lowest rate (varies by date & guests)

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USAGE
Free-Flowing Onsen
Pure spring water — no dilution, no recirculation
HeatedNo
DilutedNo
RecycledNo
FilteredNo
DisinfectedNo
AdditivesNo
▸Note

The temperature, pH and component values shown here are based on the hot spring analysis (source). Actual values in the bath may differ depending on heating, dilution, recycling and filtration. Please check current usage status at the facility.

FACILITY INFO
AI draft (unverified)
Official site
Official siteOpen
Tattoo
Confirming
Private bath (Kashikiri)
Available
Room with private open-air bath
Available
About tattoos and onsen
Travelers with tattoos can still bathe comfortably in a private bath (Kashikiri) or a room with a private open-air bath.
Hours
Weekdays: 00:00〜24:00
Weekends & holidays: 00:00〜24:00
Main public bath available 24 hours. Sky open-air bath operates on a gender-rotation system (Female: 8:30 AM - 9:30 PM, Male: 10:00 PM - 8:00 AM). Private open-air baths are available from 3:00 PM - 10:00 PM and 7:00 AM - 9:00 AM (50 minutes per session).
Transit
2-minute walk from Hakone-Yumoto Station (箱根湯本駅).
Parking
Available (free), 15 passenger car spaces. Not available for annex guests.
Phone
0460-85-5381
Facilities
Main Public BathOpen-Air BathPrivate BathGift ShopKaraoke RoomMeeting RoomLoungeTable Tennis
House rules
To maintain the cleanliness of the bathwater, please do not put towels into the bathtub.
Sources
hakone.or.jp公式hakonenavi.jpじゃらんozmall.co.jp楽天
This information may change without notice. Please contact the facility directly for accurate details.
Famous Onsen Area
Hakone Onsen — overview, spring types, and access
単純温泉塩化物泉硫酸塩泉

Choose a ryokan in Hakone

Learn more
Simple Spring — benefits, bathing tips, and onsen-hopping order
By health concern
Conditions this spring type may help with
ACCESS
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✨ The descriptions, catch phrases, and translations on this page are generated by AI (Claude). pH, temperature, and component values are OCR-extracted from the official analysis report. Learn more