Kairi
源泉湯の宿 かいりげんせんゆのやど かいり
Day Use
NoBathing & Water
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Uses natural hot spring water
Capabilities
Private bath available for day-use visitors or hotel guests to reserve
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Welcomes children and families
Children 6 and under may use mixed bathing; children 7 and over should use gender-appropriate baths. Kids yukata available.
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Relaxation space for after bathing
On-site or nearby parking available
Views
River
MountainsHighlights
Cave BathAbout
Seven baths spread across two bathhouses connected by a covered bridge, all drawing from three spring sources fed directly into the tubs without added water or heat. The lineup includes rock baths built with stones from the Sanari River, a cave bath lit by small lanterns (Hotei-son-no-yu, 布袋尊の湯), indoor baths in several shapes, and both indoor and outdoor sauna. The two bath buildings swap gender designations at midnight, so overnight guests can try each side. Oyu Onsen has over 1,300 years of history, and on a clear day Mt. Komagatake is visible from the riverside rooms.
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