Naraya Kusatsu: Shirahata Spring, the Yumori and Three Private Baths

At Naraya, the most useful room question is not simply whether a bath is attached. Ask which spring reaches it. The property draws Shirahata spring from near Yubatake and manages its temperature before it reaches the tubs. Most rooms do not have their own onsen; Iwakagami is the specifically identified exception, with a semi-open-air Shirahata bath and a view toward Yubatake.

What the yumori does to the water

Naraya’s yumori manages the spring as it moves from source to bathing temperature. The inn says Shirahata water is first cooled and settled in tanks, then adjusted through the flow entering each bath. The stated source temperature is around 55–56°C; the property aims for bath water around 41–42°C. Those figures describe the inn’s handling process, not a guaranteed temperature in every tub at every moment.

The public baths have separate areas that switch between men and women overnight. Both use Shirahata spring. Naraya lists them as open through much of the day and night, but there are cleaning and changeover periods, so “24 hours” does not mean uninterrupted access. There is no sauna.

Private baths: three rooms, one booking on arrival

The private outdoor baths are called Hi, Fu and Mi. Each uses Shirahata spring and costs ¥3,300 for 45 minutes. Guests reserve at check-in; advance reservations are not accepted. That makes them a useful option if you want a private soak, but not something to build a tight itinerary around before arriving.

Tattooed guests are not permitted in the public baths under Naraya’s current FAQ. The paid private baths are the stated alternative. Small tattoos may be accepted in the public baths if fully covered with a seal, but confirm the property’s current instructions before travel.

The room distinction matters just as much. Iwakagami is a maisonette suite with a semi-open-air Shirahata bath and a Yubatake view; the property says this room is not available to children. Minezakura also has a Yubatake view, but that does not mean it has an in-room onsen. Most other rooms rely on the public baths or the paid private baths.

Naraya is close to Yubatake, which makes it easy to return after dinner or an evening walk. The trade-off is a traditional inn in a compact, hilly hot-spring town: the official room information notes that at least one flight of stairs separates the entrance from every room. Guests with limited mobility should discuss access needs directly with the inn. Naraya also does not provide on-site parking; current parking arrangements can change, so check its access page before driving.

If the spring itself is your priority, Naraya is a distinctive choice. If you mainly want a private bath in the room, compare the Kusatsu room-upgrade guide and confirm the exact room name before booking.

Sources

- [Naraya: hot springs and the yumori](https://kusatsu-naraya.co.jp/onsen/index.html) - [Naraya: FAQ on tattoos, stairs and room baths](https://kusatsu-naraya.co.jp/faq/index.html) - [Naraya: Izuyutei rooms](https://kusatsu-naraya.co.jp/rooms/index.html) - [Naraya: standard rooms](https://kusatsu-naraya.co.jp/rooms/nomal.html) - [Naraya: access and parking](https://kusatsu-naraya.co.jp/access/index.html) - Image: [Naraya official website](https://kusatsu-naraya.co.jp/access/img/img04_pc.png)

Checked: September 27, 2026

Tags: Kusatsu Onsen, Naraya, Shirahata spring, yumori, private bath