Awaji International Hotel The Sun Plaza
淡路インターナショナルホテルザ・サンプラザあわじインターナショナルホテルザ・サンプラザ
Day Use
NoDay-use bathing is suspended for the time being, with no date given for when it will resume.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Capabilities
Private bath available for day-use visitors or hotel guests to reserve
Private onsen bath in guest rooms, for overnight guests only
6F 'Namino Oto' special floor includes a room type with its own in-room onsen bath (guest reviews describe hot spring water filling a hinoki tub in-room).
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Tattoos not allowed in sauna; bath tattoo policy not separately stated but likely same.
Welcomes children and families
Elementary-school-age and younger children are excluded from the Nature/Barrel sauna; otherwise the hotel is family-friendly (indoor kids corner, courtyard kids space, family plans, children's meals).
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Relaxation space for after bathing
On-site or nearby parking available
Views
SeaHighlights
Utaseyu
Jet Bath
Steam Sauna
GanbanyokuPrograms
About
A hotel on Awaji Island's coast, with sea views from every room and Sumoto onsen water that runs faintly whitish and mild. The main bath floor has a large rocky open-air bath, an indoor bath with waterfall and bubble jets, and a dry sauna. Separately, two purpose-built saunas are available: a large Nature Sauna (low-heat, high-humidity, mixed-gender in sauna wear) and a private barrel-shaped Barrel Sauna with a chilled plunge pool outside. For guests wanting a more private soak, three kashikiri (貸切) rooms are on offer; Shinonome (東雲) opens with the scent of cypress and a wide window facing the sea.
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Last updated July 22, 2026