Andaikan
安代館
Two indoor baths that swap sides at a 1902 wooden ryokan in Andai Onsen
Day Use
NoBathing & Water
Uses natural hot spring water
Open-air outdoor bath
Facility list names only two indoor baths; no outdoor bath is listed.
Enclosed indoor bathing area
Bathing Arrangements
A private bath you can reserve for yourself or your group
No dedicated private bath, but early check-in (from 14:00) guests may use the indoor bath privately for ¥1,100/room/hour.
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Policies & Services
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
About
Andaikan is a wooden, three-story ryokan founded in 1902, the first inn you reach as you come into Andai Onsen along the Yokoyu River. It has two indoor baths: a small one with a hinoki tub and a tiled tub called Kodai-buro (古代風呂), and a curved, big-windowed bath called Ryugu-buro (竜宮風呂) where you can hear the spring water flowing in. The two baths swap between the men's and women's sides after dinner and again after breakfast, so guests get to try both. The kakenagashi (掛け流し) water feels smooth on the skin, and reviewers describe it as clear with fine mineral flecks. There's no day-use bathing here, the baths are for overnight guests only, but the retro building keeps old touches throughout and has a small library room stocked with manga.
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Last updated September 19, 2026