Rotenburo Mizusawa Onsen
露天風呂 水沢温泉ろてんぶろ みずさわおんせん
Day Use
YesNo fixed weekly day off, but the bath closes for a day or two most months for maintenance (dates posted on the official site each month). Last entry is 20:00, though the building stays open until 21:00.
900 yen per adult per visit (elementary-school children bathe free); a 10-visit ticket is 5,000 yen. The private rest room (11:00-15:00) is 3,000 yen for one or two adults, bathing included, plus 1,000 yen per extra adult; futon rental is 660 yen and yukata rental 220 yen. The tatami rest room (10:00-16:00) is free to use.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Bathing Arrangements
Private bath available for day-use visitors or hotel guests to reserve
Private onsen bath in guest rooms, for overnight guests only
Room amenity list has no bath; all bathing is in the shared 大浴場/露天風呂.
Shared bathing area for all genders
Policies & Services
Welcomes children and families
Elementary-school children bathe free at day-use; one reviewer noted the tubs are generally deep, so small children should be watched closely.
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Views
LakeHighlights
UtaseyuPrograms
About
This informal onsen inn features both indoor and outdoor baths with very hot, mineral-rich water that tingles the skin. It offers a traditional Japanese bathing experience popular after skiing in the area.
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Last updated July 22, 2026