Diamond Setouchi Marine Hotel
ダイヤモンド瀬戸内マリンホテル
Family-friendly seaside hotel with onsen baths on the Seto Inland Sea
Day Use
YesLast entry for day-use bathing is 20:30, thirty minutes before closing.
Towel set and bathrobe rental cost extra and are not included in the day-use bathing fee.
Bathing & Water
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
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Welcomes children and families
A restaurant or dining room open to visitors, not only meals for overnight guests
Towels to rent or borrow at the desk
Towel set and bathrobe rental cost extra and are not included in the bathing fee.
On-site or nearby parking available
Free parking is reserved for overnight guests; day-use visitors may need the nearby public car park.
Views
SeaAbout
This seaside hotel sits on Shibukawa beach on the Seto Inland Sea, drawing on Tamano Onsen (たまの温泉), the only natural hot-spring water in the city. The bathing floor has a large indoor bath, an open-air bath and a sauna with a cold plunge next to it. It's set up for families with small children, with a kids' corner, a game room and a casual dining spot guests can drop into straight from the bath. The beach is a minute's walk from the door.
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Last updated September 29, 2026