Day Use
YesDay-use admission is 800 yen for adults (junior high age and up), 250 yen for children (age 3 through 6th grade), and 150 yen for infants under 3, tax included.
Bathing & Water
Uses natural hot spring water
Simple sulfur spring (単純硫黄温泉), source temperature 60-62C at 120L/min, no added water/heating claimed; a heat exchanger tempers the source down to about 40C for the tubs.
Open-air outdoor bath
Three rotenburo along the Nukanan/Nukanan-gawa river: 巨岩の湯 (Giant Rock bath, mixed), 大露天風呂 (Large open-air bath), 小露天風呂 (Small open-air bath).
Enclosed indoor bathing area
Bathing Arrangements
Private bath available for day-use visitors or hotel guests to reserve
Kashikiri is a scheduled time slot (roughly 20:00-22:00 for overnight guests) on the 巨岩の湯 bath, not an on-demand booked private bath.
Private onsen bath in guest rooms, for overnight guests only
Only the annex suite 蘇芳の庵 has its own rotenburo/indoor bath (a 2026-03 review describes it as genuine source-fed, unheated). The main-building room types (S/A/B/C) listed on the same page have no private bath.
Shared bathing area for all genders
A bathing garment (yuami-gi, 湯浴み着) or swimsuit is required for mixed bathing.
Policies & Services
Welcomes children and families
Priced admission tiers for children and infants indicate kids are welcome; a separate access-page note requires families with children to take dinner as an in-room meal option.
Restaurant or dining open to visitors (not just hotel meal plans)
The on-site restaurant/lounge やませみ is stated to be exclusively for overnight guests, not open to day-use visitors or the public; Google's editorial summary generically mentions dining, but the official site's explicit guest-only statement was kept.
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Views
River
ForestHighlights
Lukewarm BathPrograms
About
A quiet riverside inn in the Daisetsuzan backcountry, open since 1902. Three outdoor rotenburo (露天風呂) sit right along the Nukanam River, and the simple alkaline spring at nearly 60°C gives the water a silky feel on the skin. The mixed rotenburo requires a bathing garment. Yezo deer sometimes wander past on the opposite bank.
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Last updated July 22, 2026