Izu Oshima by bus
Oshima Onsen Hotel by Bus Guide
Oshima Onsen Hotel is the mountain-side hot-spring stop for travelers who want a Mt. Mihara bath day rather than a port-side soak. The planning question is simple: does the current bus timetable fit your ship or hiking plan, and is the hotel’s day-use bath open on your date?
Quick Answer
Use the Oshima Bus stop `Miharayama Onsen`. Oshima Bus’s sightseeing page lists Oshima Onsen Hotel on the Miharayama Line and Rainbow Line, with a 0-minute walk from the stop. The same bus page lists the phone number as 04992-2-1673 and the bath fee as 800 yen.
The hotel official site gives the address as Senzu aza Kizumiba 3-5, Oshima-machi, Tokyo 100-0103. Because this is a mountain-area plan, check both the hotel notice and the latest Oshima Bus timetable before you commit.
Day-Use Bath Basics
As checked on August 21, 2026, the hotel official bath page said day-use bathing is available. It listed admission at 800 yen for adults and 400 yen for children, including tax.
The same official page listed day-use bath hours as 6:00 to 9:00 and 13:00 to 21:00. It also warned that entry restrictions may apply when the bath is crowded. Treat those hours as current information, not a permanent promise.
Breakfast Rest Plan
The hotel official bath page also listed a reservation-required breakfast rest plan. It includes rest, bath service, and breakfast, and the official page says it operates only on days when the large passenger ship runs from Tokyo.
As checked on August 21, 2026, the plan time was 6:00 to 9:00, with breakfast from 7:00 to 9:00. The listed price was 2,500 yen for adults and 2,100 yen for children. Confirm availability directly before relying on it after an overnight ship arrival.
What The Bath Is
The hotel official bath page lists the source name as Miharayama Onsen and the spring quality as a simple hot spring, colorless and transparent. It says the hotel pumps hot spring water from about 300m underground at 69 C or higher.
Bath facilities are listed as one panoramic indoor bath for men and one for women, plus one open-air bath for men and one for women. Oshima Bus describes the hotel as around the seventh station on Mt. Mihara’s outer rim, about 500m elevation, with Mt. Mihara views from the open-air bath on clear days. Do not assume the view will be visible in fog, rain, or low cloud.
Closure And Timetable Checks
The hotel top page had a maintenance closure notice when checked on August 21, 2026: October 5 to October 9, 2026, for both day-use bathing and stays, with operations restarting from 13:00 on October 10, 2026. Closure notices can change, so check the hotel top page before travel.
Oshima Bus’s route-bus page showed a timetable period of July 1 to September 30, 2026 when checked. It also listed early large passenger ship connection buses, including a direction via Oshima Park and Onsen Hotel. Move to the bus stop promptly after disembarking if you plan to use an early connection.
Bus Pass And Payment Notes
As checked on August 21, 2026, Oshima Bus listed one-day passes at 2,500 yen for adults and 1,250 yen for children, and two-day passes at 3,800 yen for adults and 1,900 yen for children, valid on all routes. A pass may make sense if you combine the hotel with Mt. Mihara, Oshima Park, or other bus-heavy stops.
Oshima Bus’s FAQ says Suica and PASMO are not accepted, while cash and PayPay are accepted. It also says on-bus change is available for 50 to 500 yen coins and 1,000 yen notes. Carry small cash, especially for a mountain route where missing the return bus is the real cost.
Before You Go Checklist
- Check the hotel top page for closure notices.
- Confirm day-use bath hours and entry restrictions.
- Check whether your date has a usable Miharayama Line or Rainbow Line bus.
- Bring small cash and a towel plan.
- Build a return-bus buffer, especially in mountain weather.
Sources
- Oshima Onsen Hotel official site
- Oshima Onsen Hotel official bath page
- Oshima Bus sightseeing information
- Oshima Bus route-bus timetables, maps, fares, and passes
- Oshima Bus FAQ
- Izu Oshima Photo Studio source image and terms
Editorial disclosure: This guide was prepared from official hotel, transport, and source-image pages checked on August 21, 2026. Day-use bath hours, closure notices, breakfast-rest plan availability, admission, route-bus timetables, fares, payment rules, and facility services can change, so check official pages before travel.
