Kurabuchi Kawaura Onsen Hamayuu Sansou
倉渕川浦温泉 はまゆう山荘くらぶちかわうらおんせん はまゆうさんそう
Day Use
YesDay-use bathing and the lunch service occasionally close for a few days each month, for maintenance or when the inn hosts a private group booking; check the official site's news page for current dates.
570 yen for adults (bathing tax included); Takasaki residents get a discount, and hours can change during busy periods or private group bookings.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
A 2026 reviewer states the bath is indoor-only (glass-walled, forest view); no outdoor bath is mentioned anywhere on the official site.
Enclosed indoor bathing area
Policies & Services
Welcomes children and families
Site publishes child/elementary-school meal and lodging pricing tiers.
Restaurant or dining open to visitors (not just hotel meal plans)
Site news confirms lunch (ランチ) service normally runs alongside day-use bathing for visitors, exceptionally closed only during private group bookings.
On-site or nearby parking available
Views
ForestPrograms
About
The bath here is indoor only, but a wall of glass looks straight out into the forest, so soaking still feels close to nature. The water is a deep reddish-brown, rich in iron, a type the inn says is unique to Gunma, and it comes from a source on the property itself. Reviewers mention it can tint a white towel, because the color is that strong. Hamayuu Sansou began as a rest facility for the city of Yokosuka, with a connection to the Bakumatsu-era statesman Oguri Kozuke-no-suke (小栗上野介). It's now run by the city of Takasaki. The stone-and-wood building won an architecture award, and it sits among forest and a clear river in Kurabuchi, with an auto-camping site on the same grounds.
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Last updated July 22, 2026