Hoshi Onsen Chojukan: Day Trip or Overnight Stay?
Day visitors get Hoshi-no-yu and the women-only Choju-no-yu from 11 a.m.–2 p.m. Overnight stays add the rotating Tamaki-no-yu bath and more time at the inn.
Checked: September 27, 2026 The choice comes down to one question: is Hoshi-no-yu the whole point, or do you want the inn’s full bathing rotation? Day visitors can use Hoshi-no-yu and the women-only Choju-no-yu between 11 a.m. and 2 p.m. Overnight guests have a wider set of baths, including Tamaki-no-yu on its rotating schedule, and do not need to fit the visit into a three-hour window.
Hoshi Onsen Chojukan sits in a remote part of Minakami, Gunma. A day trip keeps the cost and time commitment lower, but the return buses are sparse. A night at the inn costs more and brings a different experience: the historic buildings, meals and bath schedule become the visit rather than a stop squeezed between connections.
What the day ticket covers
The current adult day-use fee is ¥1,500; children ages three through elementary school pay ¥500.
Admission is available from 11 a.m. to 1:30 p.m.; the building closes to day visitors at 2 p.m. The inn may stop admissions earlier if it reaches its limit. Wednesday is the regular cleaning day, and other closures can apply, so confirm before making the trip.
Day visitors can bathe in Hoshi-no-yu, the famous mixed bath, and Choju-no-yu, which is for women. Hoshi-no-yu does not allow bathing wear or towels wrapped around the body. The third public bath, Tamaki-no-yu, is not part of the day-use offer.
This is the main reason to stay overnight if you are coming for the baths specifically. The overnight rotation includes Tamaki-no-yu, though its hours change by time of day. Chojukan posted a correction in August 2026 because the schedule on parts of its official site had displayed errors; check the current timetable with the inn rather than planning around a copied schedule.
| Day visit | Overnight | |
|---|---|---|
| Bath window | 11 a.m.–2 p.m.; last admission 1:30 p.m. | A longer stay with the overnight bath rotation |
| Hoshi-no-yu | Yes; mixed bathing, no bathing wear or towel wrap | Yes; same rules apply |
| Choju-no-yu | Yes; women-only | Yes |
| Tamaki-no-yu | Not included | Available on its rotating schedule; confirm current hours |
| Transport pressure | Must fit a rare outbound and return connection | Better aligned with the limited town-bus service |
When one night changes the trip
Chojukan’s Main Building, Annex and Hoshi-no-yu bathhouse are all registered Tangible Cultural Properties. The property also has newer guest-room buildings, each with its own character. Staying lets you experience the inn outside the day-use rush and makes dinner and breakfast part of the visit; room category and meal plan determine what is included.
Overnight guests should not assume that all baths are open to everyone at once. Tamaki-no-yu follows a changing schedule, and the inn’s recent correction is a reminder to verify the times directly. A stay gives you more options, not unrestricted access at any hour.
The bus can make the decision for you
For a no-car day trip, the timing is tight: the bus from Sarugakyo that reaches Chojukan during the day-use window is limited, and you need to leave before the 2 p.m. cutoff. If you miss the useful return connection, there may be a long wait for the next leg. The no-car route guide lays out the current seasonal timetable.
With a car, a day visit is easier to arrange, but the access road is a mountain route. Chojukan advises winter visitors to prepare for snow and use winter tires or other traction equipment. Staying overnight makes more sense if you would rather not drive back immediately after bathing, particularly in winter.
A sensible rule of thumb
Choose a day visit when the historic Hoshi-no-yu is your priority, you accept the mixed-bath rules and a confirmed route gives you a comfortable buffer. Stay overnight if you want the full bath rotation, plan to enjoy the inn rather than only the bathhouse, or would rather not make the visit depend on a narrow bus connection.
For the day-use rules, prices and admission limits, see the Chojukan day-trip guide. Check current room rates with the inn for your dates; they vary by room and meal plan.
