Kurokawa Onsen Private Baths: Compare Yamamizuki, Ikoi and Kurokawaso
Compare indoor private baths at Yamamizuki, Ikoi Ryokan and Kurokawaso by pricing method and group size; call ahead to check day-use availability.
Checked: September 27, 2026
Kurokawa’s bath-pass system and a private family bath are separate things. The pass covers participating public baths; it does not reserve a room for your group. If you want to bathe together behind a closed door, compare the private-bath terms below and phone the ryokan before setting out.
These three are useful comparisons because their prices work in different ways: one charges by room at a low entry price, one charges each bather, and one keeps the same room rate for up to four people. The best deal therefore depends on who is travelling with you, not just the number on the sign.
| Ryokan | Day-use private bath | Published use window | Main trade-off |
|---|---|---|---|
| Yamamizuki | 50 minutes; ¥2,000 or ¥2,500 per room; up to 3 people | 10 am–8 pm; advance booking required from 5 pm | Best-defined room price for a couple; outside the central village |
| Ikoi Ryokan | 40 minutes; ¥1,500 per adult and ¥900 per child aged 3 through elementary school; up to 3 people | 10 am–2:30 pm | Convenient village location, but the bill grows with each person |
| Kurokawaso | 45 minutes; ¥2,500 per room; up to 4 people | 10:30 am–5 pm | A garden-side indoor bath with a room rate that can be split across a small group |
Yamamizuki: a clear room rate for two
For two adults, Yamamizuki is the easiest price to understand: the fee is per room, and the official directory lists three cypress baths. Its shared riverside outdoor bath is a different facility and a separate public-bathing option. Don’t assume the private room has the same outdoor setting.
The private bath is indoors. The river-view baths that make Yamamizuki famous are its gender-separated public baths, not part of the private-room booking. If scenery is the priority, plan to pay for the public bath separately and check its day-use hours.
Best when you can arrive early
The association lists Yamamizuki’s day-use window as 10 am to 8 pm, with advance booking required from 5 pm. Its own spa page gives a later closing time and last-entry information, so the published schedules are not identical. For a daytime visit, go by the association’s booking note; if you are aiming for the evening, confirm the slot directly with the ryokan rather than relying on either page alone.
At a room rate of ¥2,000 or ¥2,500 for up to three people, it is the easiest of these options to price for a couple. It is less convenient for a family of four, and its location is outside the central village lanes.
Ikoi Ryokan: central, but charged per person
Ikoi’s room is the shortest session of the three and charges per bather. Two adults come to ¥3,000 before any other costs. The ryokan is known for its variety of shared baths, but those public baths do not turn the private room into an outdoor one. If you want to combine a family bath with other bathing, check which public facilities are admitting day visitors that day.
Kurokawaso: split one room fee across a small group
The ¥2,500 room rate covers up to four bathers for 45 minutes. That makes the arithmetic simpler for a small family or a group of friends than at Ikoi, where every adult is charged separately. The bath is indoors beside a garden; the large rock bath visitors may see in photos is a separate public facility.
For a family with children, check both the stated capacity and the children’s charge before leaving. Ikoi lists a separate rate for children from age three through elementary school; the two room-priced options list a maximum group size instead. The published limit is not a reason to squeeze in an extra bather, and the ryokan should confirm how infants are counted.
Reservations are the deciding detail
Yamamizuki lists walk-in use during the daytime, but requires a reservation between 5 and 8 pm. Ikoi’s published day-use window ends earlier, at 2:30 pm. Kurokawaso asks visitors to call ahead and confirm availability. Those details matter more than a small price difference if the bath is the reason for making the trip.
None of these three options is a private open-air bath. If outdoor bathing together is essential, rule them out and search for a facility whose private-room listing explicitly says the bath is outdoors. Kurokawa’s shared outdoor baths and private indoor rooms are easy to confuse when browsing photos.
If you want to add a public bath
Keep the shared bath separate in your budget and schedule. Yamamizuki’s riverside open-air baths, Ikoi’s varied public baths and Kurokawaso’s large rock bath are separate facilities with their own admission rules; a private-room fee does not include them. Check the association’s same-day bathing status before building the rest of the visit around a particular inn.
If you need to know whether tattoos are accepted, ask the individual property about the specific bath you plan to use. The bath pass and a private-bath booking do not establish a property-wide tattoo rule.
A quick way to choose
For two adults, Yamamizuki has the lowest published room rate. Ikoi is the better fit if you also want the village-centre location and its other public baths. For three or four people, Kurokawaso keeps the same room price within its stated capacity. None of the three offers a private outdoor bath, so that requirement rules out all of them.
On a short half-day visit, book the private bath first and build the rest of the route around its time slot. Add one nearby public bath or a walk through the village only if the return bus leaves enough time. Trying to combine several distant baths can turn a quiet soak into a race between closing times.
For an overnight stay with a private bath, compare the Kurokawa accommodation options; for the shared-bath pass, see the Onsen Hopping Pass guide.
