A private outdoor Hotel at the foot of Mount Asama, surrounded by deep forest and a pond

A private cabin available for exclusive rental, nestled in a historic villa area of Kita-Karuizawa. On the grounds, you’ll find an Earthboat by a pond reflecting the surrounding trees, along with a landscape shaped by stones formed through Mount Asama’s volcanic activity. Each cabin features a private sauna. Choose between a wood-burning sauna you heat yourself by adding firewood, or an electric sauna warmed at the touch of a button to suit your stay. You’ll also have access to a cold plunge bath, an outdoor relaxation area, and an outdoor living space for BBQs and campfires. Pets are welcome in all cabins. Warm up in the sauna and enjoy a luxurious day away from everyday life, surrounded by crisp highland air.

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Facilities and Services

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  • Hot spring
  • Room with Open-Air Bath
  • Pet-friendly
Free-flowing hot spring / Sauna
IN15:00~24:00
OUT10:00
Number of rooms11 rooms
Opening dateAug 31, 2026
PetPermitted
Your childPermitted

Private Sauna & Open-Air Bath / Pet-Friendly / Bring-Your-Own BBQ Ingredients / Entire Home Rental (No Meals Included)

IN 15:00~24:00
OUT 10:00
¥48,970
No meals ; 2 peopleTax included¥47,991
(USD 312.75)

Private Sauna & Open-Air Bath / Pet-Friendly / Bring-Your-Own BBQ Ingredients / Entire Home Rental (No Meals Included)

IN 15:00~24:00
OUT 10:00
¥52,630
No meals ; 2 peopleTax included¥51,578
(USD 336.13)

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Introduction of the Accommodation

Basic Information

Card information
Credit card payments not accepted on site.
Pets
Permitted
• Pets must be house-trained and well behaved. • Pets must be in good health and not in heat or pregnant. • To prevent infectious diseases, pets must have received the following vaccinations within the past year: Dogs: Rabies vaccination and a combination vaccine (5-in-1 or more) Cats: Combination vaccine (3-in-1 or more) • Flea and tick prevention/treatment must be completed. • If any soiling, damage, or breakage occurs within the Facility, we will charge the necessary costs to restore it to its original condition (cleaning fees, laundry/cleaning fees, repair costs, replacement costs, and any other related expenses).
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
  • ○ Face 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
  • × Microwave oven
  • ○ Tableware
  • × Washing machine
  • × Dryer
Facilities and Features
  • ○ Entire building rental
  • ○ With kitchen
  • × Housekeeping service available for consecutive nights
  • × With a washing machine.
  • × Multiple bedrooms
  • × Supermarket nearby
  • × Within walking distance of the station
  • ○ Parking available
  • × Meal service available
  • × Catering
  • ○ Outside food allowed
  • ○ Hot spring available
  • × Swimming pool available
  • × Barrier-free
  • ○ Pet-friendly
Esthetic Massage
None
Fitness gym
None
Room with Open-Air Bath
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Heating)
Remarks
Spring quality and benefits

Sodium sulfate, bicarbonate, and chloride spring (source temperature: 51°C)

Neuralgia, muscle pain, joint pain, and more

※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.

SaunaAvailable
Hot stone spaNone

Reviews

*Reviews that have been translated from Japanese.*

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There are no reviews available.

Access Information

Address
Gunma Prefecture2286-36 Hosohara, Omae, Tsumagoi-mura, Agatsuma-gun
TEL:+81-50-1808-0043

About a 35-minute drive from Karuizawa Station on the JR Hokuriku Shinkansen.

Parking Information
Fee
Free for guests
Parking time
24 hours
Parking space
No restrictions
Number of parking spaces
15 cars available outdoor
Valet service
Unavailable
You may park up to one vehicle directly beside the guesthouse.

Pickup and drop-off information
Unavailable

Frequently Asked Questions

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