Private baths

Hotel Kadoman Day Use: Public Baths and Six Private Family Baths in Aso

Hotel Kadoman’s Aso day-use options include a ¥500 public bath from 3 pm and six private family baths at ¥2,500 per 60-minute session.

YUBIYORI Editorial TeamUpdated 2026-09-27

Photo: STA3816, Wikimedia Commons, CC BY-SA 3.0.

Kadoman’s day-use choice is simple: pay for the shared bath, or book a private family room for an hour. The public bath costs ¥500 for visitors aged six and over; children from three to under six pay ¥300. Each of the six family baths is ¥2,500 per session. The free use that overnight guests may receive when a room is vacant is a separate benefit, not part of the day ticket.

The short version: choose by time and privacy

The ¥500 public bath is the straightforward afternoon option. Choose a family room when your group wants to bathe together; the separate day-use session is ¥2,500 for 60 minutes, subject to availability. If you only have the morning in Uchinomaki, Kadoman opens too late. A town bath that opens earlier may suit the day better.

The public bath includes more than an indoor tub

The shared bath takes day visitors from 3 to 10 pm; no regular weekly closing day is listed. The onsen association describes a cave bath and an outdoor bath. At ¥500, it is pricier than the district’s basic town baths, but you get the scale and facilities of a hotel bath rather than a neighbourhood bathhouse.

What is different about the six family baths?

Each of the six private family baths is a separate day-use option. The rooms have different themes, including a cypress bath, a rock bath and a cave-style route leading outdoors. The inn’s pages do not promise that a particular room will be free when you arrive. Call ahead if one specific bath is the reason for your visit, or be ready to take whichever room is available.

The six are Roten-no-yu, Hinoki-no-yu, Kodakara-no-yu, Iwagami-no-yu, Cave-no-yu and Chinkon-no-yu. Their themes include open-air, cypress and rock bathing; Cave-no-yu takes bathers through a cave-like space to an outdoor bath. Six rooms increase the chance of finding an opening, but do not guarantee your first choice will be free.

For two adults, ¥2,500 works out to ¥1,250 per person for a full hour together. That is a very different purchase from two ¥500 public-bath admissions: the extra cost buys privacy and a shared session, not an automatic upgrade to the same bath. Families should check the room’s capacity and the rules for children before setting out.

Is ¥500 good value in Uchinomaki?

Not if the only measure is the lowest admission: Shichifuku is ¥200, Ōaso ¥300, and Yakushi and Takara-yu ¥400. Kadoman’s appeal is the combination of a hotel-sized bath, indoor and outdoor bathing, a cave bath and six separate family rooms. If you want the simplest inexpensive soak, choose a town bath. If you want more than a basic tub without paying for a private session, Kadoman has a clearer case.

Day-use option	Listed price	Hours and limits
Public bath	¥500 per adult aged 6+; ¥300 for ages 3 to under 6	3 pm–10 pm; irregular closing days
Family bath	¥2,500 per room	60 minutes; six rooms, availability varies

Why the 45°C source and 38–42°C bath range matter

Hotel Kadoman publishes a source temperature of 45°C and a bath temperature range of 38–42°C. Its materials describe the water as 100% natural hot spring water, flow-through, without added water or reheating. That is unusually useful because it separates the source reading from the bathing range. The range does not mean every bath stays at 40°C: outdoor exposure, bath size and the day’s conditions can affect how the water feels.

The public bath and family baths are the property’s own facilities. Do not use Kadoman’s source details as a shortcut for describing every bath in Uchinomaki; neighbouring facilities have their own sources and operating conditions.

Put it after the mountain, not before lunch

Day bathing starts at 3 pm, so Kadoman fits the second half of an Aso sightseeing day. Kusasenri, Aso Shrine or another daytime stop can come first, followed by a bath before dinner. If volcanic access or mountain weather changes your route, Uchinomaki remains a separate option in the basin; check road and attraction notices for the same date.

The Aso Onsen Association’s 3 September 2026 update said Mount Aso’s alert level had dropped from 3 to 2. That concerns activity around the crater, not whether Uchinomaki’s baths are open. A separate notice dated 7 August reported no major damage in Aso and Uchinomaki after the 2026 Kumamoto earthquake, with facilities operating at that time. Check current notices for your travel date; earlier status updates are not a guarantee of later operations.

Getting to Kadoman without a car

The address is 1095-1 Uchinomaki. Aso Station is about a ten-minute taxi ride away. Local buses serve the Uchinomaki area, but routes stop at different points and do not run at urban intervals. Check the Aso City timetable and your return before choosing a bath session. If the bus back does not line up with a 10 pm closing time, budget for a taxi rather than assuming the inn can take you to the station.

Towels, toiletries and tattoo rules

Towels, toiletries and tattoo rules are not clearly specified in the day-use listing. Bring a small towel and ask Kadoman directly about supplies or tattoo access. The public bath and family baths may have different conditions.

For a cheaper, simpler soak, compare the local Uchinomaki town baths. For a broader look at where to bathe, see the Aso day-bath comparison; the car-free half-day guide covers the bus-and-walking trade-offs.

Who Kadoman suits

It works for a late-afternoon or evening bath, a traveller who wants a hotel-style facility at a modest admission, or a family looking for a private room. It is less useful if you are only free before lunch, want a quiet small-inn atmosphere or need one specific family bath at a guaranteed time. For a quick dip at the lowest price, the ¥200–¥400 town baths are the better starting point.

Frequently asked questions

What does day use cost?

The association lists ¥500 for visitors aged six and over and ¥300 for children aged three to under six. The public bath is listed from 3 to 10 pm; closing days are irregular.

How much is a family bath?

¥2,500 per room for a 60-minute session. Overnight guests may have a separate vacancy-based benefit; that does not apply to day visitors.

Is the water natural hot-spring water?

Yes. Kadoman describes its water as 100% natural hot spring, supplied flow-through without added water or reheating. Published figures separate a 45°C source from a 38–42°C bath range; they do not mean every tub stays at one temperature.

Can I get there without a car?

Yes. The association places Kadoman within walking distance of a bus stop, and a taxi from Aso Station takes about ten minutes. Check the return bus before you start bathing; services are not frequent like a city route.