100% Natural Hot Spring Water The Healing Waters of Sarugakyo Onsen

Kojokaku is a traditional onsen ryokan surrounded by dense trees and lush green vegetation.

Located on a small peninsula-like strip of land that juts out overlooking Lake Akayako, the guest rooms offer majestic views no matter the season.

Experience a peaceful and relaxing soak in a real hot spring. The onsen at Kojokaku is 100% natural, and drawn direct from the source. We provide a shuttle bus service between the hotel and JR Jomo-Kogen Station and Gokan Station. Free Wi-Fi available at the lobby.

Hot Spring at Kojokaku
A Hidden Gem

Outdoor Baths

Open-air baths surrounded by nature and offering stunning views of Lake Akayako

Experience a peaceful and relaxing soak in a real hot spring, surrounded by beautiful green nature. Enjoy views of the magnificent Lake Akayako below and the changing colors of the four seasons.

Private Bath

The ultimate in privacy and relaxation.

Hagoromo-no-Yu offers panoramic views of the magnificent Lake Akayako below. Enjoy a leisurely soak, surrounded by beautiful green nature.

8 Unique Outdoor Onsen Baths

Ladies only outdoor bath Tanabata-no-Yu Enjoy 8 unique baths & stunning landscape views Total of 11 baths (including private / indoor baths)

We have 8 types of open-air hot spring baths. Six of these are mixed gender bathing, designed to allow guests to enjoy bathing in a variety of interesting hot spring baths. We also have separate male and female baths. Please enjoy a relaxing soak while looking out over Lake Akayako below.

Natural Hot Spring

The soothing hot spring waters of Sarugakyo

With deep ties to the famous feudal-era warlord Uesugi Kenshin, who considered Sarugakyo to be an auspicious place, the hot spring allows bathers to enjoy a relaxing soak in soothing waters.

Directions to Kojokaku

Hotel Kojokaku, Lakeside Ryokan in Sarugakyo Onsen

121 Sarugakyo Onsen, Minakami, Tone, Gunma 379-1403
Tel: +81(0)278-66-1021

Detailed Map

By Car:

By Shinkansen: Via Jomo Kogen Station

By Shinkansen: Via Takasaki Station

Directions if coming by E4 Max Toki Shinkansen

Hotel Shuttle Bus Information

We provide a shuttle bus service between the hotel and Jomo-Kogen Station / Gokan Station, according to the schedule below.
If you would like to use the shuttle bus service, please make a reservation at least 3 days in advance of your stay.

*Please note that the service is unavailable on Saturdays and days before national holidays. There may also be other dates when the service is unavailable.

*The shuttle bus service may not be available for certain reservation packages.

Car Parking Information

We have a free car-park, holding up to 50 vehicles.

Hot Spring at Kojokaku A Hidden Gem