明山荘
Hot-spring hotel overlooking Mikawa Bay
Last admission is 19:00 (bathing until 20:00). A face towel is included; bath towel rental is 300 yen. An 11-visit day-use ticket book costs 12,000 yen (towel not included).
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Private onsen bath in guest rooms, for overnight guests only
Some suites have their own private bath, but it is not filled with the hot-spring water; the onsen baths are the shared ones on the first floor.
Shared bathing area for all genders
Allows entry with visible tattoos
Welcomes children and families
Children of the opposite gender may join a parent in the bath only up to preschool age.
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
On-site or nearby parking available
A hot-spring hotel above Mikawa Bay in Gamagori, Aichi. The open-air bath and the indoor men's and women's baths draw on two separate natural springs, and the line-up runs on to a carbonated bath, a reclining bath, a cold plunge and a sauna, so there's real variety beyond a single tub. The water is soft and smooth on the skin. Rooms look out over the bay, and day-use bathing is available daily alongside the hotel's buffet meals.
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Last updated September 29, 2026