Furumachi Onsen "Akaiwaso"
古町温泉赤岩荘
Plain day-use bathhouse in Minamiaizu with open-air baths
Day Use
YesClosed on Wednesdays. If Wednesday is a public holiday, the closure moves to the next or the following weekday; in weeks where Wednesday to Friday are all holidays there is no closure. Last entry for bathing is 19:30.
Adult (junior high school and up) 550 yen, 200 yen for Minamiaizu residents; elementary school children 100 yen. A separate 150 yen bathing tax (nyuto-zei, 入湯税) is charged each visit. Multi-visit tickets (11 visits) and annual passes are available.
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
A restaurant or dining room open to visitors, not only meals for overnight guests
Relaxation space for after bathing
About
A modest day-use bathhouse in Furumachi, Minamiaizu. Men and women each have an indoor bath and an open-air bath (rotenburo), kept flowing fresh with salty, iron-rich source water that turns cloudy and red-brown. There is no sauna and no designer tubs; the place says so itself. Two halls double as a dining room and a rest area, and the menu runs to ramen, curry and set meals, so it works as a stop for a soak and a bite.
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Last updated October 11, 2026