Official Hotel of "Karuizawa Toy Kingdom," with dedicated rooms for babies.

A highland resort hotel surrounded by nature at an altitude of 1,100m offers a variety of facilities, including the popular Toy Kingdom for families (closed in winter) and Oku-Karuizawa Onsen. We provide various types of rooms, such as the "Playroom" equipped with about 20 kinds of toys and the "Baby Plan Exclusive Room," certified as a Welcome Baby Accommodation. For dinner, enjoy a buffet featuring teppanyaki made with Joshu Mochi Pork, freshly fried tempura, and local dishes from Joshu and Shinshu.

  • This was my first time staying at this Hotel. The front desk staff were wonderful, and the food was delicious—I was very satisfied.Just one thing: coffee was provided in the morning, but it was a coffee drink rather than brewed coffee, which was a little disappointing.Still, considering everything overall, I felt it offered excellent value for money. Thank you very much.

    Yahoo!トラベルユー... 3/22/2026
  • I visited during the limited period from 3/19 to 3/29 when they offered all-you-can-eat crab. There was also all-you-can-drink alcohol, and with discounts such as points, I paid 14,100 yen for a solo stay, which felt like an excellent deal. The crab was red snow crab, and it was meaty and delicious. The other dishes were also quite good. The breakfast buffet had a wide variety and was excellent as well. My Room was a double Japanese-Western style room on the back side of the building, so the view was of the woods. From the front side, you can see Mt. Asama beyond the trees. The large public bath is in a separate building on the first floor past a corridor on the second floor; there isn’t much of a view, but the open-air bath was very nice. Overall, I really liked the buffet selection and would like to visit again. I hope they offer all-you-can-eat crab again.

    Yahoo!トラベルユー... 4/15/2026

Facilities and Services

See All
  • Hot spring
Open-air bath / Large public bath / Sauna / Free shuttle service
IN15:00~20:00
OUT10:00
Number of rooms360 rooms
Your childPermitted
PetNot allowed
Wanwan Cottage (Dog Hotel) will be temporarily closed until further notice.

[Winter] 1 Night with Breakfast Included: Casual Stay Plan — Enjoy the Okukaruizawa Onsen Open-Air Bath!

IN 15:00~23:00
OUT 10:00
¥19,740
Breakfast included ; 2 peopleTax included¥17,770
(USD 111.38)

[Late Arrival OK!] 1 Night with Breakfast Included: Casual Stay Plan — Enjoy the Okukaruizawa Onsen Open-Air Bath!

IN 15:00~23:00
OUT 10:00
¥24,990
Breakfast included ; 2 peopleTax included¥22,500
(USD 141.03)

[Winter] 1 Night with Breakfast Included: Casual Stay Plan — Enjoy the Okukaruizawa Onsen Open-Air Bath!

IN 15:00~23:00
OUT 10:00
¥23,100
Breakfast included ; 2 peopleTax included¥20,790
(USD 130.31)

[Late Arrival OK!] 1 Night with Breakfast Included: Casual Stay Plan — Enjoy the Okukaruizawa Onsen Open-Air Bath!

IN 15:00~23:00
OUT 10:00
¥27,510
Breakfast included ; 2 peopleTax included¥24,760
(USD 155.19)

Dec 19–Mar 30 [Baby-Friendly] Baby Plan: A Welcome Baby Accommodation!

IN 14:00~20:00
OUT 11:00
¥29,190
Dinner and Breakfast included ; 2 peopleTax included¥26,280
(USD 164.72)

Last-Minute Deal 15% OFF [Limited to 30 Groups per Day] Baby Plan | Includes Toy Kingdom Admission Ticket

IN 14:00~20:00
OUT 11:00
¥29,274
Dinner and Breakfast included ; 2 peopleTax included¥26,354
(USD 165.18)

Best-Selling Stays

Rooms With Open-Air Baths Popular At Stays

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Accommodation For Child Sharing Existing Bedding

Ranking Of Accommodation With Spectacular Views

Introduction of the Accommodation

Karuizawa Toy Kingdom
Karuizawa Toy Kingdom
Karuizawa Toy Kingdom
Karuizawa Toy Kingdom
Official Hotel of Karuizawa Toy Kingdom

A collection of excitement for children at the "Toy Kingdom." The Hotel is conveniently located within the same premises, making it easy to move around. Even after a full day of play, you can quickly return to your Room. During the winter closure, a mini Toy Kingdom "Asobo! Land" appears in the Hotel.

Kids Menu
Baby Plan Room
Kids Menu
Baby Plan Room
Children are valued guests too.

Baby Plan rooms and other accommodations tailored to your child's age are available. We also offer a buffet with a wide variety of baby food by age and kids' menu options. Certified as a Mikihouse "Welcome Baby Accommodation"!

Natural Onsen "Akatsuki no Yu"

Natural Onsen "Akatsuki no Yu"

Natural Onsen sourced from 1,600m underground. The milky yellow water has a smooth texture that gently warms your body from the core. With an abundant flow of 200 liters per minute, it is one of our prides. The bath area features "Open-Air Rock Bath," "Open-Air Hinoki Bath," "Indoor Bath," and "Cave Bath" for you to enjoy a relaxing time. From spring to summer, immerse yourself in lush greenery; in autumn, admire the vibrant foliage; and in winter, experience the snowy open-air baths. Soaking under a starry night sky is one of the unique pleasures at Green Plaza Karuizawa, located at an elevation of 1,110m away from the hustle and bustle.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Restaurant
    Restaurant

Basic Information

Card information
VISA / MASTER / JCB / AMEX / DINERS / UnionPay
Pets
Not allowed
Wanwan Cottage (Dog Hotel) will be temporarily closed until further notice.
BreakfastThere is no information about breakfast.
Your child
You can stay.
Room service
Not available
Common amenities
  • ○ Shampoo · conditioner
  • × Body soap · soap
  • ○ Towel · Bath towel
  • × Body towel · sponge
  • ○ Toothbrush set
  • ○ Comb · Brush
  • × Shower cap
  • ○ Hair dryer
  • ○ Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • ○ Yukata
  • × Nightwear
  • × 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
  • × Video on Demand
  • × Radio
  • × CD player
  • × DVD player
  • × Blu-ray player
  • × Speakers for portable audio
  • × In-room PCs and tablets
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
1
Business Hours
14:00~24:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
【Business Hours】 *Due to renovations of the Onsen facility, only indoor baths are currently available. The open-air rock bath and cypress bath operate with heated well water. The cave bath is temporarily closed. Regular operations are expected to resume from March 14.* Morning: 5:00 AM - 10:00 AM (Last entry at 9:30 AM) / Evening: 1:00 PM - Midnight (Last entry at 11:30 PM) *Winter season (December to March): From 2:00 PM* 【Day-use Bathing】 1:00 PM - 10:00 PM *Winter season (December to March): From 2:00 PM* / Adults ¥1,300, Children ¥650 *Towel rental available for a fee (Face & Bath Towel Set ¥300 including tax)*
Open-air bath
The number of Open-air bath
3
Business Hours
14:00~24:00
Hot spring
None
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
【Business Hours】 *Due to renovations of the Onsen facility, only indoor baths are currently available. The open-air rock bath and cypress bath operate with heated well water. The cave bath is temporarily closed. Regular operations are expected to resume from March 14.* Morning: 5:00 AM - 10:00 AM (Last entry at 9:30 AM) / Evening: 1:00 PM - Midnight (Last entry at 11:30 PM) *During winter (December to March), evening hours start from 2:00 PM.* 【Day-use Bathing】 1:00 PM - 10:00 PM *During winter (December to March), starts from 2:00 PM* / Adults ¥1,300, Children ¥650 *Towel rental available for an additional fee (Face & Bath Towel Set ¥300 including tax).*
Spring quality and benefits

Sodium sulfate, chloride, and bicarbonate Onsen (neutral, hypotonic, high-temperature Onsen)

Neuralgia, muscle pain, joint pain, frozen shoulder, motor paralysis, joint stiffness, bruises, sprains, chronic digestive disorders, etc.

SaunaAvailable
Hot stone spaNone
OthersOther Accepted Cards: Saison Card, Mitsubishi UFJ NICOS, DC Card, UC, AEON, JA

Reviews

Overall Score
3.85
(22)
  • Rooms & Amenities
    3.36
  • Facility
    3.77
  • Hospitality & Service
    3.86
  • Meals
    4.09
  • Onsen & Bath
    4.18
  • Satisfaction
    3.82

*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 Prefecture2277 Oomae Hosohara, Tsumagoi Village, Agatsuma District
TEL:+81-570-091-489

50 minutes by car or taxi from Karuizawa Station
55 minutes from Usui-Karuizawa IC

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

Pickup and drop-off information
Available (Free)*Please check the official Hotel website for details.*

Frequently Asked Questions

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