Kusatsu Onsen Hotel Ichii occupies a prime position in Kusatsu Onsen, one of Japan's most celebrated hot spring resorts in Gunma Prefecture, roughly 150 kilometres northwest of Tokyo. The inn sits within easy walking distance of the iconic Yubatake (hot spring field), where visitors can observe the dramatic flow of mineral-rich waters that define Kusatsu's character. The surrounding Agatsuma District offers mountain scenery and bracing highland air throughout the year.
The inn follows the traditions of a Japanese ryokan, with a wooden aesthetic, tatami-floored corridors, and a garden visible from select common areas. Ichii has operated in the Kusatsu Onsen spa town for several decades, cultivating a reputation for attentive personal service and high-quality kaiseki dining that showcases seasonal Gunma produce including locally grown vegetables and freshwater fish.
Accommodation spans Japanese-style tatami rooms, semi-Western combination rooms, and private onsen suites—the latter offering an in-room hot spring bath fed by Kusatsu's naturally acidic, highly sulphurous waters. The temperature of Kusatsu's spring waters reaches around 55°C at the source, and the inn explains traditional cooling techniques known as yumomi to guests arriving for their first stay.
Dining centres on a kaiseki dinner served in the room or a dedicated dining hall, presenting multiple courses of seasonal Japanese cuisine. Breakfast, likewise kaiseki in style, typically includes grilled fish, pickled vegetables, tofu, miso soup, and steamed rice. Meals are reserved for staying guests only.
Hot spring access includes large communal baths segregated by gender and the private suites available in top-tier rooms. The sulphurous Kusatsu waters are reputed for dermatological and circulatory benefits, and the inn provides bathing etiquette guidance to international guests. Yukata robes are provided as standard. The inn caters primarily to couples and adult travellers seeking immersive Japanese spa culture. The front desk staff offer guidance on local attractions including the Netsu-no-yu bathing performance theatre and the Kusatsu International Music Festival. Free on-site parking is available, and the inn is accessible by bus from Naganohara-Kusatsuguchi Station on the Agatsuma Line.
Room types
- Japanese-style tatami rooms
- Semi-Western rooms
- Private onsen suite
Amenities
- Private onsen room
- Kaiseki dinner
- Japanese garden
- Yukata provided
- Free parking
- Wi-Fi
Location
208 Kusatsu, Agatsuma-gun, Gunma 377-1711
36.6195, 138.5991 View on map
Highlights
- Private in-room onsen suites fed by Kusatsu's acidic sulphurous spring water
- Multi-course kaiseki dinner showcasing seasonal Gunma produce
- Walking distance to the iconic Yubatake hot spring field
- Japanese garden setting with tatami-floored rooms and yukata provided
- Personalised service with etiquette guidance for first-time onsen guests
Tips for visiting
- Book private onsen suite rooms well in advance—they fill months ahead during autumn foliage season (October–November).
- Visit the Yubatake at night when illuminated; it is a 5-minute walk from the inn.
- Bring yen cash for local souvenir stalls and the Netsu-no-yu performance tickets, as card acceptance is limited in Kusatsu village.
- The inn's last bus connection from Naganohara-Kusatsuguchi Station departs in the early evening; confirm the schedule before arrival.
- Kusatsu's spring water is highly acidic—avoid submerging metal jewellery or watches during bathing.
Accessibility
The inn occupies a multi-storey traditional wooden building with steps at the entrance and between floors; elevator access is limited. Guests with mobility impairments or wheelchair requirements should contact the property directly before booking to confirm room and bath accessibility.
Visit, book or contact
Frequently asked questions
How do visitors reach Kusatsu Onsen Hotel Ichii from Tokyo?
Take the JR Agatsuma Line from Takasaki to Naganohara-Kusatsuguchi Station, then a bus to Kusatsu Onsen Bus Terminal (approximately 30 minutes). The total journey from Tokyo takes around 2.5–3 hours. The inn is within a short walk or taxi ride from the bus terminal.
Are private onsen baths available at the inn?
Yes. The inn offers private onsen suites with in-room hot spring baths fed by Kusatsu's natural spring water. Communal gender-segregated baths are also available for all guests regardless of room category.
What does the standard room rate include?
Standard rates include a kaiseki dinner and Japanese-style breakfast for each guest, yukata robes, access to communal baths, and free parking. Private onsen suites carry a higher nightly rate.
Is the inn suitable for children?
The inn primarily caters to adult guests and couples. Families with older children may be accommodated, but guests are advised to confirm suitability and any age-related policies directly with the property before booking.