Day Use
NoBathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Capabilities
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Swimwear (yuamigi) required
Policies & Services
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Views
LakeAbout
Sui Suwako sits on the shore of Lake Suwa, and every room has its own private outdoor bath looking out over the water. On the rooftop, a mixed open-air bath called Watashizuku (綿雫) lets guests soak together in swimwear with the full width of the lake ahead of them. The spring is sulfur water from the local Kamisuwa (上諏訪) onsen source.
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Last updated June 23, 2026