Hakone · Hakone-Yumoto

Hakone Suimeisou: the room with its own onsen

箱根水明荘

by Hakone-Yumoto station. Google rating 4.1 from 821 reviews. Checked on its own website on 15 November 2026.

  • Open-air bath
  • Hayakawa river view
  • Private dinner

The room to book

Room with open-air onsen bath overlooking the Hayakawa

your roomyour own bath hot-spring water

The proof, in Hakone Suimeisou's own words

露天風呂付客室の露天風呂は100%温泉です。

“The open-air bath in rooms with an open-air bath is 100% hot-spring water.”Hakone Suimeisou website

【禁煙】【早川渓流を望む客室露天風呂】★露天風呂付客室★

“Non-smoking, in-room open-air bath overlooking the Hayakawa stream, room with open-air bath”Hakone Suimeisou website

通常和室はお部屋食、露天風呂付客室は個室食でのお食事となります。

“Standard Japanese rooms have in-room dining; rooms with open-air bath dine in a private room.”Hakone Suimeisou website
The room, checked
Room to bookRoom with open-air onsen bath overlooking the Hayakawa露天風呂付客室
Hot-spring water in the roomYes, quoted below
BathOpen-air bath
Free-flowing spring (kakenagashi)Not stated
Spring typeAlkaline simple spring
View from the bathHayakawa river
DinnerDinner in a private dining room
BedsNot stated
Rooms with the bathSome rooms only: book by name
Room sizeNot stated
SleepsNot stated

Standard Japanese rooms have heated tap water, not onsen.

Getting this room

  1. Book it by name. Choose "Room with open-air onsen bath overlooking the Hayakawa" (露天風呂付客室). Only some rooms have the bath.
  2. Ask what the website doesn't say. It doesn't mention free-flowing spring, the beds.
  3. Check the confirmation. It should name the room with the bath. If it doesn't, contact the property.

Nearest other rooms with their own onsen

All 76 in Hakone

Room with open-air onsen bath overlooking the HayakawaCheck prices