愛らんどセンター 御神火温泉あいらんどせんたーごじんかおんせん
毎週木曜日・第2水曜日（2月・3月・8月は変則）
Adults ¥710; children (elementary/middle school) ¥300. Bath towel rental ¥300, face towel ¥200. Extended morning hours (from 6:30) on nights when the overnight ferry from Tokyo arrives; otherwise 9:00 open.
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Uses natural hot spring water
Shared bathing area for all genders
Welcomes children and families
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
Sea
Jet BathRun by Oshima town and named Gojinka (御神火) after the island's volcano Mt. Mihara, this day-use complex has a large indoor bath, jacuzzi, dry sauna, cold bath, and a 25-meter swimming pool fed by the natural spring water with ocean views. The water is a faintly salty chloride spring. A tatami rest hall and restaurant are on site. On mornings after the overnight ferry from Tokyo docks, the complex opens early to welcome arriving visitors.
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710 yen, near the main port. When overnight boats from Tokyo arrive, it opens at 6 AM, otherwise from 9. Onsen somewhat resembling a super sento: two baths at 40, sauna, cold bath, three lying baths, and a bath where you can stand on a cube while a water jet falls on you. Clear water, no smell. Very pleasant onsen, feels like a local community center since there's also a tiny gym, a cafe, and a pool.
