Kose Onsen Hotel - Karuizawa

3-star natural hot-spring ryokan in the tranquil hills of Kose, Karuizawa

Amenities

Kose Onsen offers 24-hour access to both public and open-air hot spring baths without any additional charge. Guests can reserve the private-use hot spring bath for free, subject to a 45-minute courtesy limit when others are waiting. The property also includes a garden, shared lounge, gift shop, and free self-parking for those arriving by car.

Rooms

Japanese-style rooms at the Kose Onsen hotel feature tatami flooring and futon beds, with some offering scenic mountain views. Each room is equipped with air conditioning, a flat-screen TV, an electric kettle, and a private bathroom with a bath, shower, and complimentary toiletries. A seating area with a TV allows guests to relax after a day of exploring the surrounding nature trails.

Dining

On-site dining at Kose Onsen serves breakfast and dinner of Japanese or Western cuisine, prepared daily with fresh seasonal ingredients. A prior reservation is required for meal services, ensuring that each dish is made to order. The kaiseki-style dinner, noted in guest reviews, provides a multi-course experience highlighting local produce.

Wellness

The natural hot-spring baths at Kose Onsen are the property's main wellness feature, with water at 42 °C that leaves skin feeling refreshed. Guests can choose between the public indoor bath or the private outdoor rotenburo, each available without reservation fees. A 300 yen per person hot spring tax is applied at checkout, and yukata robes are provided for use during the stay.

Location

The Kose Onsen ryokan sits in a secluded area of the Kose hills, a 15-minute drive from JR Karuizawa Station and a 20-minute drive from Karuizawa Prince Shopping Plaza. The property has its own bus stop, making it accessible even for guests without a car, though bus schedules are limited. Nearby attractions include Shiraito Falls, Kyukaruizawa Golf Club, and Karuizawa Snow Park, with walking trails directly from the hotel.

• Hot springs: 24-hour public and open-air baths plus free private booking
• Rooms: Tatami-floored Japanese-style rooms with mountain views
• Dining: Kaiseki dinner and seasonal Japanese/Western breakfast
• Wellness: Natural mineral water at 42 °C in indoor and outdoor baths
• Location: Secluded hills with own bus stop, near Shiraito Falls and Karuizawa Prince Shopping Plaza
• Parking: Free self-parking on site

License number: 長野県小諸保健所指令51小保環第908号