Iwaiya Stay Guide: Rooms, Baths and Access at Iwai Onsen
Plan an Iwaiya stay with room sizes, the 2026 bath rotation, its separately booked private bath and the bus connection to Iwai Onsen.
Iwaiya makes sense when the hot spring itself is a reason to stay in Iwai. Its signature public bath is deep enough to stand chest-high, with spring water rising from beneath the pinewood floor. One point is easy to miss when comparing room upgrades: the inn lists its private bath as a separate, bookable facility, not as a feature of a guestroom. Choose a room for its floor, layout and sleeping arrangement; reserve the private bath separately if bathing together matters.
Room choice is mostly about floor and sleeping setup
The inn describes itself as a three-storey wooden building with 13 rooms. Its Japanese-style room categories vary in floor, size and whether the room includes Japanese-style beds. The official room list includes a private bidet toilet in each listed category, but it does not list an in-room natural hot-spring bath.
| Room category | Published capacity and size | When it fits |
|---|---|---|
| Standard Japanese-style room, 2F or 3F | 2 guests; about 12 m² | A compact room for a pair who are happy with futon bedding |
| Japanese-style room with beds, 2F | 2 guests; about 12 m² | The smaller listed option with a bed-style sleeping setup |
| Two-room Japanese-style room with beds, 3F | 2–3 guests; about 16 m² | A little more space for a small group; some layouts lack an inner porch |
| Special two-room Japanese-style room with beds, 2F or 3F | 2–4 guests; about 22 m² | More room to spread out; the inn assigns the specific room |
| Two-room Japanese-style room, 1F | About 22 m² | Ground-floor location and a larger layout |
Room layouts can vary, and some categories are assigned by the inn. Its room page specifically warns that first-floor guests may hear footsteps from above in this old wooden building. If floor location or sleeping arrangement is a hard requirement, ask what can be confirmed before booking rather than relying on the category name alone.
The baths, and the 2026 change to the gender rotation
Iwaiya’s two main public baths share the same natural spring. Gensen Choju-no-yu is the deeper one, with water bubbling up beneath its pinewood floor; its attached open-air bath is Sedo-no-yu. Iwai-no-yu is the other public bath and has no outdoor section. The inn describes its hot springs as 100% source-fed.
The current overnight rotation gives Choju-no-yu and Sedo-no-yu to men until 21:30, then to women from 22:00. Iwai-no-yu is assigned to women until 21:30, then to men from 22:00. The baths are otherwise available around the clock, except during cleaning. Keep the 21:30–22:00 changeover in mind when deciding when to visit each side.
Want a private bath? Book it as an extra
Yoimachi Gusa is Iwaiya’s private bath for families or companions who want to bathe together. The inn lists a 45-minute session using 100% natural spring water, reserved at the front desk on the day. It is a separate facility rather than an in-room amenity; check its current fee and availability when you arrive.
For a short daytime visit instead of an overnight stay, the Iwai Onsen day-trip guide covers Yukamuri Onsen, Iwaiya’s brief midday day-use window and Akashiya.
Meals are seasonal, and plan details matter
Iwaiya serves seasonal kaiseki using local ingredients; its dining page mentions Tottori beef, local fish and seasonal vegetables. Menus change through the year, and some stay-only bookings can add meals separately.
| Meal | Price per person |
|---|---|
| Dinner | ¥11,000 |
| Breakfast | ¥3,300 |
| Dinner and breakfast | ¥14,300 |
The official English page says to order by 10:00 a.m. the day before; availability is limited. Treat those as add-on prices for the relevant plan, not as a universal room rate or a promise that every date has the same meal option.
The listed check-in time is 15:00 and check-out is 10:00. If you want dinner, check your arrival route and the plan’s meal conditions before booking; the local bus is not frequent enough to leave the last connection until the final minute.
Arriving without a car
From JR Iwami Station, take the bus toward Iwai Onsen for about 10 minutes and get off at the Iwai Onsen stop. Iwaiya is about a one-minute walk from there. A direct route bus also runs from Tottori Station, taking roughly an hour. Japan Transportation lists this as local route 32/33, the Iwami-Iwai Line; check its current route and timetable for your travel date and return journey.
The inn has 15 free parking spaces, with no reservation listed as necessary. If you are driving, use its current access page for the route and winter conditions. The village is a useful base for the wider Iwami coast, but coastal stops and the inn are separate legs of the day; do not assume a local bus will line up with every sightseeing plan.
Room rates and availability depend on your dates, room category and meal plan. These links are for comparing the same inn; neither platform is guaranteed to have the lowest price on every date.
