A somewhat worn-out small hotel, but with a good location and views from the rooms. The food is excellent. The men's and women's onsens switch every other day. Only one has a rotenburo. The water is kakenagashi from the Bandai source. Very hot, they don't cool it down.
Hoterusupakkusu Kusatsu
ホテルスパックス草津ホテルスパックスくさつ
Kakenagashi baths from Kusatsu's largest spring, on a hilltop above Yubatake
Lodging
Bathing & Water
Natural onsen water
Uses natural hot spring water
Outdoor BathYes
Open-air outdoor bath
Indoor BathYes
Enclosed indoor bathing area
SaunaYes
Sauna room of any kind
Bathing Arrangements
Mixed BathingNo
Shared bathing area for all genders
Policies & Services
WashingYes
Shower, wash stations, soap and shampoo provided
ParkingYes
On-site or nearby parking available
About
Hotel Spax Kusatsu sits on a rise about three minutes from Yubatake, the town's central hot spring field. The indoor baths and a single rotenburo (open-air bath) draw water from the Bandaiko (万代鉱) spring, the highest-volume source in Kusatsu, kept flowing fresh around the clock. Because there is only one rotenburo, it alternates between men and women on a daily basis. Both the men's and women's sides have a sauna.
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Last updated September 19, 2026