An Onsen Accommodation Surrounded by Lush Greenery, Offering Beauty and Cuisine to Soothe the Soul.

Located in the center of the Boso Peninsula, our facility is approximately a 1.5-hour drive from Tokyo. Situated along a valley, you can enjoy a tranquil environment surrounded by nature throughout the seasons.

  • We stayed with our 4-year-old daughter for my husband’s birthday.After making a Reservation, they kindly confirmed by phone and accommodated our last-minute request for a birthday plate as much as possible.Both the staff on the phone and the team on site were all warm and attentive.There were plenty of kid-friendly activities, such as playing in the river behind the property and fireworks at night, which made it a very satisfying trip.They were also very kind to our child, and she says she wants to come again.

    Yahoo!トラベルユー... 8/6/2026
  • I visited Yoro Valley by the Kominato Railway—it was a wonderfully retro train trip. Someone from Mochinoki kindly picked me up at the station, and I was able to relax and unwind to the sound of the river in Yoro Valley. The salt-grilled fish was delicious. I also took a photo at the Longevity Spring.

    Yahoo!トラベルユー... 4/25/2026

Facilities and Services

See All
  • Hot spring
  • Room with Open-Air Bath
Open-air bath / Large public bath / Free shuttle service
IN15:00~18:00
OUT10:00
Number of rooms16 rooms
PetNot allowed
Your childPermitted

Close to streams and mountains, "away from the daily hustle and bustle," relax at a tranquil property with a leisurely plan.

IN 15:00~18:00
OUT 10:00
¥43,200
Dinner and Breakfast included ; 2 peopleTax included¥38,880
(USD 243.69)

[Play in the On-Site Mountain Stream] [Standard] Summer Vacation Family Fireworks Plan – River Play Gear Available for Loan –

IN 15:00~18:00
OUT 10:00
¥45,000
Dinner and Breakfast included ; 2 peopleTax included¥40,500
(USD 253.85)

Close to streams and mountains, "away from the daily hustle and bustle," relax at a tranquil property with a leisurely plan.

IN 15:00~18:00
OUT 10:00
¥43,200
Dinner and Breakfast included ; 2 peopleTax included¥38,880
(USD 243.69)

【Three Major Benefits】【Standard】Plan to enjoy an Onsen trip with colorful yukata and gelato.

IN 15:00~18:00
OUT 10:00
¥45,400
Dinner and Breakfast included ; 2 peopleTax included¥40,860
(USD 256.11)

Close to streams and mountains, "away from the daily hustle and bustle," relax at a tranquil property with a leisurely plan.

IN 15:00~18:00
OUT 10:00
¥46,500
Dinner and Breakfast included ; 2 peopleTax included¥41,850
(USD 262.31)

[Play in the On-Site Mountain Stream] [Standard] Summer Vacation Family Fireworks Plan – River Play Gear Available for Loan –

IN 15:00~18:00
OUT 10:00
¥46,500
Dinner and Breakfast included ; 2 peopleTax included¥41,850
(USD 262.31)

Best-Selling Stays

Accommodation With Breakfast And Dinner Buffet

Accommodation Suitable For Dining Gatherings

Easy-To-Reach Accommodation Without A Car

Accommodation With Easy Access To Public Transportation

Introduction of the Accommodation

Basic Information

Card information
VISA / MASTER / JCB / AMEX / DINERS / Debit card
Pets
Not allowed
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
2
Business Hours
15:00~10:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating)
Remarks
Bathing hours: 3:00 PM - 12:00 AM, 5:00 AM - 10:00 AM
Open-air bath
The number of Open-air bath
2
Business Hours
15:00~10:00
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating)
Remarks
Bathing hours: 3:00 PM - 12:00 AM, 5:00 AM - 10:30 AM
Room with Open-Air Bath
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating)
Remarks
Spring quality and benefits

Metasilicic Acid

Balance your skin's ceramides.

SaunaNone
Hot stone spaNone

Reviews

Overall Score
4.60
Wonderful (13)
  • Rooms & Amenities
    4.46
  • Facility
    4.38
  • Hospitality & Service
    4.77
  • Meals
    4.69
  • Onsen & Bath
    4.62
  • Satisfaction
    4.69

*Reviews that have been translated from Japanese.*

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

Access Information

Address
Chiba Prefecture105-1 Otadai, Otaki-machi, Isumi-gun
TEL:+81-470-80-9000

Approximately 10 minutes by car from Yorokeikoku Station.

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

Pickup and drop-off information
Available (Free)If you would like Shuttle Service from Yoro Keikoku Station or Kazusa-Nakano Station, please inform us in advance by the day before with the station name, number of people, and arrival time.

Frequently Asked Questions

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