Onsen OniOnsen Oni

Yumotokan

湯本館ゆもとかん

Other
Yugashima Onsen
Chubu·Shizuoka
0558-85-1028yumotokan-izu.jp

Day Use

Yes

Bathing & Water

Outdoor BathYes

Open-air outdoor bath

OnsenYes

Uses natural hot spring water

Capabilities

Private BathYes

Private bath available for day-use visitors or hotel guests to reserve

西平泉 湯ヶ島29号

Nishihira Spring, Yugashima No. 29
硫
Sulfate
+ Chloride
Classification

Calcium-Sodium Sulfate spring

A calcium- and sodium-led sulfate–chloride spring emerging at 45.4 °C, weakly alkaline and hypotonic. Sulfate dominates the anion balance (about 90 mval%) with chloride underneath, giving the water a settled, mineral-rich body rather than a salty bite. The posted indications include cuts, peripheral circulation issues, sensitivity to cold and dry skin.

Source temperature
45.4°C
Hot
Tonicity
Hypotonic
 
Free CO₂
4.40mg/kg
Low

Analyzed Feb 6, 2020·株式会社サイエンス·Cert no. 静岡県第5号

Views

Forest

Programs

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SM
Sergey M
1 year ago

510. Yumotokan, Izu (pt.2) ★★★ About the onsens: 2. Men's indoor bath. Switches to women's from 20:00 to 22:00. Clear water, temperature 41. Breathing inside is tolerable. 3. Women's indoor bath. Switches to men's from 20:00 to 22:00. Clear water, temperature 42-43. Somewhat stuffy inside. 4. Small private indoor bath. Clear water, stuffy inside. Amazing ryokan, highly recommended for a stay. Absolutely loved it. 09.05.2025 10.05.2025

SM
Sergey M
1 year ago

510. Yumotokan, Izu (pt.1) ★★★ Stayed overnight. Had double dinner and breakfast, kaiseki served in a separate space, everything was great. Listed among the "secret" Hitou onsens. Higaeri advertised at 800 yen from 12:00 to 14:30. This ryokan was deeply beloved by Kawabata Yasunari, the outstanding Japanese writer and Nobel Prize laureate in literature. The ryokan has a dedicated memorial room with photographs. The staff specifically talks about this and emphasizes it — very respectable. The room is very pleasant with a balcony overlooking the river. Falling asleep to the sound of the river is super cozy. Service is also great, Japanese staff with minimal English. About the onsens: 1. Private outdoor stone bath. Absolutely top-tier. No reservation, first-come-first-served. I got in both in the evening and morning without issues. Maximally natural view of the river and forest, incredibly atmospheric. Clear water, very faint proper sulfurous onsen smell. Temperature 39-40. 09.05.2025 10.05.2025