All rooms face the Shiman River, a modern Ryokan with a Showa retro ambiance.

This is a modern Ryokan at Shima Onsen, popular among women. It features a large public bath and three private open-air baths that can be used multiple times for free. Check-out is at 12 PM, making it ideal for those who wish to relax in the morning.

  • The Accommodation has a nostalgic, retro feel while still being very stylish and lovely. This time we stayed in the “Japanese Twin with Terrace” Room—tatami flooring, low beds, and a deck terrace.What impressed me most was how comfortable the bed was!I was told it’s a Nishikawa Muatsu mattress, and it truly felt amazing—I slept unbelievably well. The pillow was also excellent, and I completely fell in love with the bedding. I’d like to use the same one at home, so I would really appreciate it if you could tell me which type of Muatsu it is.The Onsen was wonderful as well.All three private baths had their own unique charm and were beautiful. The large public bath was also very relaxing—I ended up going in many times during our stay.As soon as you soak in the Onsen, your body warms up right away. The water feels soft, and your skin becomes moisturized and silky smooth. I also loved that bath towels were provided at the baths, so you can always use a clean one.Truly excellent therapeutic bathing.Unfortunately it rained this time—but because of that, we were able to take our time at the Accommodation, soak in the Onsen slowly, and enjoy doing nothing. We chose a Plan with 12:00 checkout, so we didn’t have to rush in the morning and could enjoy the Onsen until the very end.And then—the meals.Absolutely no complaints.Each dish was carefully prepared and beautifully presented. It was a meal where you can truly enjoy every course for what it is.And something I’ll never forget: draft Yebisu beer!After it arrived, the foam gradually rose up into a rich head—it looked delicious even before tasting. And when I tried it… it really was incredible. I honestly thought there aren’t many places where draft beer tastes this good—it moved me.This “Joshu Beef & Gunma’s Blessings / Three Free Private Open-Air Baths / 12:00 Checkout / A Nostalgic Holiday” Plan was absolutely perfect for me.Shima Onsen in the rain is wonderful too.Soak in the Onsen, eat well, drink well—and sleep incredibly well.In this charming retro Accommodation, I had an amazing time that relaxed both my mind and body.All of the staff were pleasant as well, and the overall atmosphere throughout the Accommodation felt very comfortable. We felt great from start to finish during our stay.The Onsen, meals, bedding—and above all else—the warm hospitality from everyone on staff. Everything felt so comfortable that this is an Accommodation I definitely want to stay at again.

    温泉たまごまる 8/21/2026
  • This was my first long-awaited trip to Shima Onsen.As we got closer to Shima Onsen, we were greeted by lush, untouched natural scenery…Before checking in to the Accommodation, we went a little further to Lake Okushimako, where the stunning “Shima Blue” surface looked exactly like it does in travel magazines…Everything was wonderful.Kashiwaya Ryokan, located slightly outside the Onsen town area, was outstanding in every way—the Ryokan atmosphere, meals, Onsen, and the view from our Room…The complimentary coffee served in the library…All of it was excellent.And just as we reluctantly checked out and were about to step out of the entrance, there was a charming farewell with bubbles and “Thank you”…It was hospitality through and through—far beyond complete satisfaction—it made us think, “We want to come back!”I truly believe this is an Accommodation that lets you fully enjoy Shima Onsen.We would love to return again in a different season.

    NKさん 7/24/2026

Facilities and Services

See All
  • Hot spring
  • Room with Open-Air Bath
Open-air bath / Free-flowing hot spring / Large public bath / Private bath
IN15:00~17:30
OUT12:00
Number of rooms14 rooms
PetNot allowed
Your childPermitted

<Light Meal> Fewer dishes, three free private open-air baths, a nostalgic holiday

IN 15:00~17:00
OUT 12:00
¥45,000~
Dinner and Breakfast included ; 2 peopleTax included¥40,500〜
(USD 255.83)

<Standard> Jōshū Beef and Gunma's Delights - Three Free Private Open-Air Baths - Check-out at 12 PM, Nostalgic Holiday.

IN 15:00~17:00
OUT 12:00
¥47,000~
Dinner and Breakfast included ; 2 peopleTax included¥42,300〜
(USD 267.20)
Wano Twin 【萩・嶺】
  • Japanese-Western room
  • 20㎡
  • Capacity 1~2 people

<Light Meal> Fewer dishes, three free private open-air baths, a nostalgic holiday

IN 15:00~17:00
OUT 12:00
¥47,000~
Dinner and Breakfast included ; 2 peopleTax included¥42,300〜
(USD 267.20)

<Standard> Jōshū Beef and Gunma's Delights - Three Free Private Open-Air Baths - Check-out at 12 PM, Nostalgic Holiday.

IN 15:00~17:00
OUT 12:00
¥49,000~
Dinner and Breakfast included ; 2 peopleTax included¥44,100〜
(USD 278.57)

<Light Meal> Fewer dishes, three free private open-air baths, a nostalgic holiday

IN 15:00~17:00
OUT 12:00
¥52,000~
Dinner and Breakfast included ; 2 peopleTax included¥46,800〜
(USD 295.63)

<Standard> Jōshū Beef and Gunma's Delights - Three Free Private Open-Air Baths - Check-out at 12 PM, Nostalgic Holiday.

IN 15:00~17:00
OUT 12:00
¥54,000~
Dinner and Breakfast included ; 2 peopleTax included¥48,600〜
(USD 307.00)

Best-Selling Stays

Rooms With Open-Air Baths Popular At Stays

Stays Popular For Natural Hot Springs

Recommended Accommodation for Multiple Night Stay

Introduction of the Accommodation

Private open-air bath
Exterior
Room with open-air bath -亀kame-
Private open-air bath
Exterior

Exterior

A modern Ryokan popular among women

Ryokan Baya, located in Shima Onsen, Gunma Prefecture, is a modern-style ryokan popular among women. With 14 rooms featuring classic black telephones, three private open-air baths available for free use, single-occupancy rooms, and two rooms with open-air baths, there are various ways to enjoy your stay. Please visit us.

Meal
Gentle and healthy seasonal delicacies

The theme is dishes that gently and healthily use local and seasonal ingredients, bringing joy to the body.

Example of a guest room
Diverse rooms with a unique Japanese modern style

Including the rare "Single Room" at the Onsen Ryokan, you can enjoy a variety of rooms.

Room
Renovated in 2021, free Wi-Fi throughout the building

A setting reminiscent of the good old days with a subtle touch, offering a comfortable stay in a compact space. Free Wi-Fi is available throughout the premises.

Onsen and bath
Private Onsen that can be enjoyed repeatedly

Three private open-air baths available without Reservation. Most guests enjoy them in combination with the public bath.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Hot Springs & Baths
    Hot Springs & Baths
  • Facilities & Services
    Facilities & Services
  • Meal
    Meal

Basic Information

TaxesHot Spring Tax will be charged separately.
Card information
VISA / MASTER / JCB / AMEX / DINERS
Pets
Not allowed
BreakfastPlease refer to the Plan guide.
Your child
You can stay.
Available for select rooms only.
Room service
Not available
Drink orders available (15:00-21:00)
Common amenities
  • ○ Shampoo · conditioner
  • ○ Body soap · soap
  • ○ Face towel
  • ○ Bath towel
  • × Body towel · sponge
  • ○ Toothbrush set
  • × Comb · Brush
  • × Shower cap
  • ○ Hair dryer
  • × Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • ○ Yukata
  • × Pajamas
  • × Bathrobe
  • × Slippers
  • × facial cleanser
  • × Toner
  • × Lotion
  • × Makeup remover
  • × Cotton swab
  • × Cotton
  • ○ Clothing deodorizing spray
  • ○ Refrigerator
  • × Minibar
  • ○ Electric kettle
  • ○ Tea set (free)
  • ○ Television
  • ○ Safe
  • × Scale
  • × Trouser press
  • × Free morning edition
  • × Pay-per-view broadcast
  • × Satellite broadcasting
Facilities and Features
  • ○ Hot spring
  • ○ Rooms with open-air baths available
  • ○ Open-air bath
  • ○ Free-flowing hot spring
  • ○ Large public bath
  • ○ Private bath
  • × Sauna
  • × Ganbanyoku (rock bathing)
  • × Within a 5-minute walk from the station
  • × Within a 5-minute walk to the convenience store.
  • × Indoor pool
  • × Outdoor pool
  • × Pet-friendly
  • × Spa facility
  • × Fitness
  • × Free shuttle service
  • × Shuttle Service (Paid)
  • × Room service
  • × Room Service Available 24 Hours
  • × Barrier-free
  • × Childcare services
Esthetic Massage
None
Fitness gym
None
Public Bath
The number of Public Bath
2
Business Hours
15:00~11:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
100% natural hot spring (Heating, Adding Water)
Remarks
Depending on the season, heating or adding water may be performed to adjust the temperature.
Open-air bath
The number of Open-air bath
3
Business Hours
00:00~00:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Heating, Adding Water)
Remarks
All three open-air baths are available for private use (free of charge). They are not available during late-night hours (1:00-5:00). Depending on the season, the temperature may be adjusted by adding hot or cold water.
Private bath
The number of Private bath
3
Business Hours
00:00~00:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Heating, Adding Water)
Remarks
All three open-air baths are available for private use (free of charge). They are not available during late-night hours (1:00-5:00). Depending on the season, the temperature may be adjusted by adding hot or cold water.
Room with Open-Air Bath
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Heating, Adding Water)
Remarks
Depending on the season, heating or adding water may be performed to adjust the temperature.
Spring quality and benefits

Sodium-Calcium Chloride Sulfate Spring

※Regarding the notation of "Gensen Kakenagashi"
In some facilities, heating or adding water for temperature adjustment may be performed. Additionally, please note that in some parts of the facility, the hot spring water may not be free-flowing from the source. For more details, please contact each facility.

SaunaNone
Hot stone spaNone
OthersThere is no elevator. Movement is via stairs.
About Hygiene Measures
We will implement the following measures. We appreciate your cooperation and understanding. Staff Measures - Temperature checks will be conducted upon arrival at work, and staff with a temperature of 37.5°C or higher will not be allowed to work. - Masks may be worn, including during customer interactions. - Staff will frequently sanitize their hands using disinfectant. - In addition to regular cleaning, we will disinfect frequently touched areas such as doorknobs. Requests for Guests - If you have a fever or feel unwell before your departure, please refrain from staying at the Property. - Upon arrival, please sanitize your hands using the provided disinfectant. - We may ask for your cooperation in temperature checks upon arrival. If your temperature is 37.5°C or higher, we will contact the local health authorities and discuss the appropriate measures. Thank you for your kind cooperation.

Reviews

Overall Score
4.48
Good (48)
  • Rooms & Amenities
    4.17
  • Facility
    4.25
  • Hospitality & Service
    4.71
  • Meals
    4.46
  • Onsen & Bath
    4.79
  • Satisfaction
    4.48

*Reviews that have been translated from Japanese.*

*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*

Access Information

Address
Gunma Prefecture3829 Shima, Nakanojo-machi, Agatsuma-gun
TEL:+81-279-64-2255

By Car:
Exit the Kan-Etsu Expressway at Shibukawa Ikaho IC, and take Route 17 and Route 353 for about 1 hour.

After exiting the expressway, initially head towards Niigata, Numata, and Nakanojo.
After about 10 minutes, turn left onto Route 17, then enter Route 353 towards Nakanojo and Kusatsu.
After approximately 20 km, you will reach the city center of Nakanojo. Here, there is a fork between the Kusatsu direction and the Shima Onsen direction. Turn right and proceed towards Shima Onsen.

By Train/Bus:
Get off at JR Agatsuma Line Nakanojo Station, and take the Kan-Etsu Kotsu bus bound for Shima Onsen for about 30 minutes. Get off at the Seiryu-no-Yu Iriguchi bus stop, which is right in front of the destination.

To reach Nakanojo Station, you can take one of the following routes:
● Take the Joetsu or Nagano Shinkansen to Takasaki (50 minutes from Tokyo) ⇒ Transfer to the JR Agatsuma Line starting from Takasaki (50 minutes).
● Get off at JR Joetsu Line Shibukawa Station ⇒ Transfer to the JR Agatsuma Line (30 minutes).

※ There is also a direct limited express train "Kusatsu-go" from Ueno to Nakanojo Station.

By Highway Bus:
The Kan-Etsu Kotsu-operated highway bus "Shima Onsen-go" costs 6,000 yen round trip or 3,350 yen one way.
Travel directly from Tokyo to Shima Onsen without transfers, and no worries about snowy winter roads.
As it is a reservation-only service, please make your Reservation with Kan-Etsu Kotsu.

Also, check out the exclusive direct bus Plan available only on the official website of Shima Onsen Kashiwaya Ryokan.

Parking Information
Fee
Free for guests
Parking time
---
Parking space
No restrictions
Number of parking spaces
15 cars available outdoor
Valet service
Unavailable

Pickup and drop-off information
Unavailable

Frequently Asked Questions

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