• I stayed here the night before a hike. I had made a Reservation with rice balls for breakfast, but at check-in they kindly changed it to an earlier Ryokan-style meal. It was relaxing and very nice. I was able to enjoy the free-flowing Onsen almost privately. Although the building is old, it was well cleaned throughout. I would love to stay again.

    Yahoo!トラベルユー... 6/5/2026
  • A relaxing 3-night, 4-day Onsen getaway for a couple. We came to escape the heat, but it was right in the middle of the rainy season, so the days were pleasantly cool. Kazawa Onsen is located in Tsumagoi, famous for its cabbage fields and conveniently close to Kita-Karuizawa and Kusatsu. It’s a rare hot spring with “black water” (though it’s actually clear) and reddish-brown sediment (so-called Yunohana). After one soak, your skin feels silky smooth! After two soaks, even smoother! Rich in iron—especially great for women. Your hands and feet stay warm for a long time, and it also seemed to help with lack of sleep (and stress). By the time we left, my skin looked like it might even be brighter. The meals included many small dishes featuring local vegetables and mountain plants; everything—from simmered dishes to dressed salads and grilled items—was delicious. The proprietress welcomed us kindly and warmly. We enjoyed blissful time simply lounging around all day and soaking in the Onsen.

    Yahoo!トラベルユー... 7/2/2026

Facilities and Services

See All
  • Hot spring
Free-flowing hot spring / Large public bath
IN15:00~21:00
OUT10:00
Number of rooms25 rooms
PetNot allowed
Your childPermitted

Notice from the Accommodation

From November to April, a heating fee of 150 yen per person per night will be charged additionally.

[Room Only] Latest check-in by 9 PM. Enjoy a relaxing time with 24-hour access to natural Onsen with free-flowing hot spring water!

IN 15:00~21:00
OUT 10:00
¥12,000
No meals ; 2 peopleTax included¥10,800
(USD 67.78)

[With Breakfast] Enjoy a healthy Japanese breakfast. Start your day right with a hearty meal to refresh your mind and body.

IN 15:00~21:00
OUT 10:00
¥15,000
Breakfast included ; 2 peopleTax included¥13,500
(USD 84.72)

[Room Only] Latest check-in by 9 PM. Enjoy a relaxing time with 24-hour access to natural Onsen with free-flowing hot spring water!

IN 15:00~21:00
OUT 10:00
¥14,000
No meals ; 2 peopleTax included¥12,600
(USD 79.07)

[With Breakfast] Enjoy a healthy Japanese breakfast. Start your day right with a hearty meal to refresh your mind and body.

IN 15:00~21:00
OUT 10:00
¥17,000
Breakfast included ; 2 peopleTax included¥15,300
(USD 96.02)

[Room Only] Latest check-in by 9 PM. Enjoy a relaxing time with 24-hour access to natural Onsen with free-flowing hot spring water!

IN 15:00~21:00
OUT 10:00
¥15,000
No meals ; 2 peopleTax included¥13,500
(USD 84.72)

[With Breakfast] Enjoy a healthy Japanese breakfast. Start your day right with a hearty meal to refresh your mind and body.

IN 15:00~21:00
OUT 10:00
¥18,000
Breakfast included ; 2 peopleTax included¥16,200
(USD 101.67)

Best-Selling Stays

Introduction of the Accommodation

Basic Information

TaxesA Hot Spring Tax of 150 yen per adult will be charged separately.
Card information
Credit card payments not accepted on site.
Pets
Not allowed
BreakfastWe offer a healthy Japanese-style 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
2
Business Hours
00:00~24:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Bathing is available 24 hours a day.
Spring quality and benefits

Sodium Bicarbonate Hot Spring

Gastrointestinal Disorders, Joint Pain, Rheumatism & Neurological Diseases

※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

Reviews

Overall Score
4.00
(11)
  • Rooms & Amenities
    3.64
  • Facility
    3.45
  • Hospitality & Service
    4.09
  • Meals
    4.20
  • Onsen & Bath
    4.36
  • Satisfaction
    4.27

*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 Prefecture1017-59 Tashiro, Tsumagoi Village, Agatsuma District
TEL:+81-279-98-0314

Exit Joshinetsu Expressway at Yunomaru IC, approximately 40 minutes via Yunomaru.
From Agatsuma Line "Manza-Kazawaguchi" Station, about 20 minutes by taxi (car).

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

Pickup and drop-off information
Unavailable

Frequently Asked Questions

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