Skip to main content
  1. Hotel reviews homepage
  2. Japan hotel reviews
  3. Nagano hotel reviews
  4. Karuizawa hotel reviews
  5. Reviews of Kose Onsen

Reviews of Kose Onsen This rating is a reflection of how the property compares to the industry standard when it comes to price, facilities and services available. It's based on a self-evaluation by the property. Use this rating to help choose your stay!

389-0111 Nagano, Karuizawa, Nagakura 2126, Japan

#32 of 48 hotels in Karuizawa

Guests' Choice

Review Score

Based on 46 hotel reviews

8.0

Score breakdown

  • Cleanliness

    8.1

  • Comfort

    8.0

  • Location

    8.0

  • Facilities

    8.0

  • Staff

    8.5

  • Value for money

    7.7

  • Free Wifi

    8.8

Verified guest reviews from real Bookers

Real Bookers. Real stays. Real opinions.

Read more– opens a dialog box
Write a Review

Showing 1 - 25

  • Reviewed: June 9, 2025

    9.0
    Wonderful
    • Leisure trip
    • Solo traveler
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    Staff has poor or no English.

    Fantastic dinner. Good Japanese breakfast, of which I am no fan. Nice private onsen.

    Stayed in June 2025

  • Reviewed: November 24, 2024

    8.0
    Full ryokan experience on a budget
    • Leisure trip
    • Solo traveler
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    Location - car recommended. Bus is OK, but only walk friendly attraction is the ryugaeki falls. Access to Shiraito falls is cut off (Shinanoji trail damaged) Meals were a mix of western and Japanese (which felt weird). For example pesto sea bream.

    2 onsen options - public indoor & private 露天風呂(outdoor rotenburo). I spent ~2h over multiple visits in the onsens (1 night stay) Water temperature (42 Celsius) was perfect, and left skin feeling great Friendly and polite staff Operates like a historic ryokan (i.e. call reminders for meals, setting up futon, etc) Quiet & good room size. Note: Yes, there's water damage/mildew, but it is an older ryokan. Decent for the price and authentic experience

    Stayed in November 2024

  • Reviewed: April 14, 2024

    9.0
    Wonderful
    • Leisure trip
    • Family with young children
    • Twin Room
    • Stayed 3 nights
    • Submitted from a mobile device

    Quiet and cosy Ryokan with retro-charme and good food

    Stayed in April 2024

  • Reviewed: February 21, 2024

    8.0
    Very Good
    • Leisure trip
    • Group
    • Japanese-Style Standard Room
    • Stayed 1 night

    It was a great experience but I expected more from the breakfast, although it was also good. The room was clean, the onsen was really nice. Very easy to get to the city with a bus.

    Stayed in January 2024

  • Reviewed: December 27, 2023

    8.0
    Nice & quiet, very good for relaxing holidays
    • Leisure trip
    • Family with young children
    • Japanese-Style Standard Room
    • Stayed 2 nights
    • Submitted from a mobile device

    The hot spring bathroom is quite small.

    Very traditional & small hot spring hotel in the mountain with nice view.

    Stayed in December 2023

  • Reviewed: December 23, 2023

    9.0
    Wonderful
    • Leisure trip
    • Group
    • Japanese-Style Quadruple Room
    • Stayed 1 night

    Very nice old style ryokan surrounded by nature. Very cozy private rotenburo. Nice japanese breakfast.

    Stayed in November 2023

  • Reviewed: October 17, 2023

    8.0
    Good place to quiet down and be alone.
    • Leisure trip
    • Solo traveler
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    It was a bit cold in the common areas as the weather was getting cold.

    Surrounding was very quiet and serene. Not crowded

    Stayed in October 2023

  • Reviewed: October 17, 2023

    7.0
    Good
    • Leisure trip
    • Couple
    • Twin Room
    • Stayed 2 nights
    • Submitted from a mobile device

    Too dark - difficult to see and read. No hooks for coats or towels. Breakfast poor

    Stayed in October 2023

  • Reviewed: September 17, 2023

    9.0
    Very relaxing experience in a remote location
    • Leisure trip
    • Couple
    • Twin Room
    • Stayed 2 nights
    • Submitted from a mobile device

    Really only accessible by car as public transport was limited during the night. We did see a bus stop just outside Kose. The mountain roads leading up to the hotel are pitch black at night so be prepared and drive carefully. It is a tolled road into a national park so during the day you have to pay 500 yen but during the night the toll was unmanned. The hotel staff did say after we arrived that had we mentioned Kose hotel we would have been let in for free, if you had payed the hotel would refund you if you keep your receipts

    Very remote onsen in a national park away from the busy city so noise pollution was non existent. There was a stream running from outside our room so which was very relaxing if you enjoy those sounds. The private onsen which you could book when you want to use it was clean and extremely relaxing. The water temperature was excellent. The staff were excellent and very accommodating as we did not speak any English at all so had to communicate via google translate.

    Stayed in September 2023

  • Reviewed: September 13, 2023

    9.0
    Wonderful
    • Leisure trip
    • Travelers with friends
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    The hot spring is good and location is beautiful.

    Stayed in September 2023

  • Reviewed: May 24, 2023

    9.0
    Wonderful
    • Leisure trip
    • Solo traveler
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    There is not much more to see nearby than the hotel itself and you would need a car or rely on an infrequent bus connection (with most passenger going to Kusatsu, so ensure to tell the driver you need to unboard earlier or it will take forever to get your luggage back)

    Staff was very kind and patient since I do not understand Japanese too well. The food was great

    Stayed in May 2023

  • Reviewed: March 26, 2023

    8.0
    nice and calming experience with the onsen. loved that it’s quiet and peaceful.
    • Leisure trip
    • Family with young children
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    far from train station

    tranquil surroundings , nice meals

    Stayed in March 2023

  • Reviewed: May 18, 2025

    10
    Exceptional
    • Leisure trip
    • Solo traveler
    • Japanese-Style Standard Room
    • Stayed 1 night
    • Submitted from a mobile device

    Great place - it felt like traveling back in time to a place of tranquility and calm

    Stayed in May 2025

  • Reviewed: April 11, 2025

    6.0
    traditional Japanese Onsen style
    • Leisure trip
    • Family with young children
    • Japanese-Style Standard Room
    • Stayed 2 nights

    A quiet retreat with a rich sense of history in the area. The rooms and furnishings beautifully reflect the charm of the past, featuring décor and facilities that preserve an authentic 1980s traditional Japanese Onsen style. Perfect for those who appreciate a nostalgic and peaceful atmosphere.

    Stayed in April 2025

  • Reviewed: November 22, 2024

    10
    Nice secluded Ryokan
    • Leisure trip
    • Family with young children
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    Staff very friendly and helpful. Staff speak little english, so be prepared to use a translator. Onsen water is very good. Food is very nice, standard kaiseki meal. Breakfast is typical japanese breakfast. Private onsen is free of charge. Hotel easily accessible via bus. Check the schedule before time since the bus isnt 24 hours.

    Stayed in November 2024

  • Reviewed: July 30, 2024

    2.0
    Just don't bother...
    • Leisure trip
    • Couple
    • Japanese-Style Standard Room
    • Stayed 1 night

    Uncomfortable bed; dated and shabby furnishings. VERY mediocre food - tasted like all the ingredients were past due. Kitchen staff kept insisting there was no spinach in the meal (my wife is allergic) in spite of us seeing spinach in the dish. No apologies, just didn't seem to care. We left a day early. By FAR the worst place we stayed in a month in Japan.

    Private onsen was very nice. Building is in a beautiful natural setting quite far out of town. Busses stop running in the late afternoon.

    Stayed in May 2024

  • Reviewed: July 27, 2024

    2.0
    Expensive and poor quality
    • Leisure trip
    • Family with young children
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    It was the most expensive place that I stayed in while visiting Japan. Unfortunately, it was also of the lowest quality. The bathroom smelled bad, there were stains on the walls, a knob was missing from the cupboard, wooden chopsticks and worst of all, the air conditioner was broken.

    Service was pleasant

    Stayed in July 2024

  • Reviewed: May 9, 2024

    3.0
    Poor
    • Leisure trip
    • Couple
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    Dirtiest bathroom ever. Moisture and dirt. Dusty bedroom

    Nice external onsen, good food, quiet and green place

    Stayed in May 2024

  • Reviewed: December 4, 2023

    4.0
    I wish they cleaned the bathrooms...
    • Leisure trip
    • Solo traveler
    • Japanese-Style Quadruple Room
    • Stayed 2 nights
    • Submitted from a mobile device

    The thing that bothered me the most was how dirty the whole room, and especially the bathroom, was. Everywhere you looked at there was mold from a long time ago. Attached is a picture of the kettle that's supposed to be DRINKING WATER for your tea. Disgusting. The Onsen is free, but when you do the checkout you have to pay tax, mine was ¥300. The hotel is an hour away from the city so they could have more vending machines on site. You could only buy beer, water, tea and cup noodles and they were overpriced. Location is horrible for going around, no taxis near, and if you do get a taxi it'll be around ¥3,000-¥4,000 and the only bus from the hotel was only working from 10 am to 4 pm with a 40-minute gap. So for the whole day there would be 9 buses in total. The check out is 10 am, the earliest checkout I have ever seen. This is my 5th week in Japan and this stay was my worst experience (other factors involved). Due to the lack of cleanliness, I don't recommend this hotel.

    I liked the room in terms of size, of furniture, of decoration. The private onsen was really nice too.

    Stayed in December 2023

  • Reviewed: October 18, 2023

    10
    Exceptional
    • Leisure trip
    • Couple
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    Well, everything was great, but the bathroom is really really cold 😅

    The location, the calm and the establishment.

    Stayed in October 2023

  • Reviewed: June 7, 2023

    10
    I will be returning that is for sure.
    • Leisure trip
    • Couple
    • Twin Room
    • Stayed 2 nights

    It was all good

    Very good private onsen's and amazing food. nice and secluded

    Stayed in May 2023

  • Reviewed: February 12, 2023

    4.0
    DISAPPOINTED !
    • Leisure trip
    • Family with young children
    • Japanese-Style Quadruple Room
    • Stayed 2 nights
    • Submitted from a mobile device

    Everything from the service to food to room and omg the onsen was really bad..

    I'm a regular with booking.com for 10+ years n true onsens hopper and I must expressed this is 1 of those bad ryokans we have ever experienced!! Traditional old we can expect but toilet was dirty n service was zero.. food was bad unlike a real ryokan we were served western food for both nights! They still used kerosene as heater n whole ryokan was smelling of kerosene!! Utterly DISAPPOINTED n for the price we paid....it was really NOT WORTH IT AT ALL..

    Stayed in February 2023

  • Reviewed: January 7, 2023

    10
    Exceptional
    • Leisure trip
    • Family with young children
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    The hotel near the river is so beautiful!!!! and the private hot spring is excellent!!!! Food is perfect, staff is friendly as well!!

    Stayed in January 2023

  • Reviewed: December 28, 2022

    10
    Exceptional
    • Leisure trip
    • Solo traveler
    • Japanese-Style Quadruple Room
    • Stayed 1 night
    • Submitted from a mobile device

    none

    the staff, the environment, the room

    Stayed in December 2022

Showing 1 - 25

We Price Match
We Price Match
Low rates • No booking fees • Find something cheaper? We'll refund the difference!

Guests also reviewed these properties: