San To Koya Onsen Daikokuya
三斗小屋温泉 大黒屋さんとこやおんせん だいこくや
Lamp-lit mountain ryokan reached only by trail, with two kakenagashi indoor baths
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
タオルは販売（レンタルではなく購入）
On-site or nearby parking available
Views
MountainsAbout
Sandogoya Onsen Daikokuya sits at 1,450 meters on Mt. Nasu and can only be reached on foot, roughly a two-hour hike from the nearest trailhead. The lodge has two indoor baths, a large hinoki (cypress) tub and a smaller rock bath, running hot and cool respectively. Both flow fresh kakenagashi (源泉掛け流し) with no reheating. The baths are shared on an hourly rotation between men and women. There is no outdoor bath and no day-use option. Meals are brought to your room on a traditional tray. The place is open seasonally from early April to late November.
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Last updated September 19, 2026