Day Use
YesTemporary closures for maintenance may occur (examples: February and March 2023).
Adults (middle school+) 1,000 yen; elementary 700 yen; preschool free. Nikko residents: adults 500 yen, elementary 250 yen, seniors 300 yen. Reservation recommended; hours may change (lodging guests given priority).
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
On-site or nearby parking available
Views
Mountains
RiverAbout
A small hotel in the gorge along the Koshin River (庚申川) in Ashio, a former copper-mining town northwest of Nikko. The baths draw from Koshin-no-yu (庚申の湯), a clear, soft spring that feels smooth on the skin. Each side has an indoor bath, an open-air rock bath with mountain views, and a low-temperature sauna.
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Last updated June 25, 2026