Exterior
Lobby
Pool
Guest Room
Washbasin
28 photos

ADVENTURES ISLAND LAKE MISTRAL OHYARU

Chiba Prefecture／Yachimata City
¥47,200～
No meals ; 2 peopleTax included¥37,760〜
(USD 238.26)

About an hour from the city center. A relaxing resort nestled between a lake and satoyama countryside.

A stay-style wellness resort where you can gently unwind mind and body amid abundant nature, surrounded by a lake and satoyama countryside. With refined guest rooms overlooking the lake, an airy lobby, the Lakeside Bar, and a wide range of experiences such as water activities and a pool, we offer many ways to enjoy the outdoors up close. Escape the bustle of everyday life and savor a comfortable getaway that enriches time spent with family and loved ones.

Reviews

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Facilities and Services

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  • Pet-friendly
IN15:00～22:00
OUT11:00
Number of rooms56 rooms
Opening dateOct 1, 2026
PetPermitted
Your childPermitted

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Deluxe Room

[Soft Opening Special] A Carefree Resort Stay in a Luxurious Room <Room Only>

IN 15:00～22:00
OUT 11:00
¥47,200～
No meals ; 2 peopleTax included¥37,760〜
(USD 238.26)

[Soft Opening Special] Enjoy a Leisurely Morning at the Hilltop Café <Breakfast Included>

IN 15:00～22:00
OUT 11:00
¥56,000～
Breakfast included ; 2 peopleTax included¥44,800〜
(USD 282.68)
Executive Room

[Soft Opening Special] A Carefree Resort Stay in a Luxurious Room <Room Only>

IN 15:00～22:00
OUT 11:00
¥50,820～
No meals ; 2 peopleTax included¥40,656〜
(USD 256.53)

[Soft Opening Special] Enjoy a Leisurely Morning at the Hilltop Café <Breakfast Included>

IN 15:00～22:00
OUT 11:00
¥59,620～
Breakfast included ; 2 peopleTax included¥47,696〜
(USD 300.96)
Junior Suite

[Soft Opening Special] A Carefree Resort Stay in a Luxurious Room <Room Only>

IN 15:00～22:00
OUT 11:00
¥52,520～
No meals ; 2 peopleTax included¥42,016〜
(USD 265.12)

[Soft Opening Special] Enjoy a Leisurely Morning at the Hilltop Café <Breakfast Included>

IN 15:00～22:00
OUT 11:00
¥61,320～
Breakfast included ; 2 peopleTax included¥49,056〜
(USD 309.54)

Best-Selling Stays

Spacious Accommodation For Tall And Large Guests

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Accommodation With Premium Mattresses

Recommended Accommodation For High School Student Trips

Introduction of the Accommodation

About 1 hour from central Tokyo. A new resort is coming to Otani-ryu, Yachimata City, Chiba—nestled between a lake and the surrounding satoyama hills. A new vision of wellness born from the “Yachimata Future City” concept. A stay embraced by satoyama nature begins here.

Lobby
Exterior
Lobby
Exterior
Lakeside Hours — Relax by the Lake —

Enjoy water activities and the pool while immersing yourself in the abundant nature of Satoyama. Relax as time slows down in our open, airy lobby and at the Lakeside Bar. Take in views of the waterfront and Satoyama countryside, and enjoy a refreshing escape from everyday life. *Some photos are for illustrative purposes only.*

Facilities and Equipment of Accommodation

  • The room
    The room

Basic Information

Card information
VISA / MASTER / JCB / AMEX / DINERS
Pets
Permitted
●JPY 5,500 per dog per night (tax included) *For stays with dogs, please present proof of vaccination for rabies administered within the past year and a valid certificate for a 5-in-1 (or higher) combination vaccine.*
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
SaunaNone
Hot stone spaNone

Reviews

*Reviews that have been translated from Japanese.*

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

There are no reviews available.

Access Information

Address
Chiba Prefecture101 Sunadaya Yatsu, Oyaru, Yachimata City
TEL：+81-43-330-7130

[By Car] Approx. 12.2 km (about 15 min) from Sakura IC; approx. 6.4 km (about 11 min) from Yamada IC [By Train] JR Limited Express Shiosai: Tokyo ⇔ Yachimata (as fast as 53 min); JR Sobu Main Line Rapid / JR Sobu Main Line (as fast as 80 min)

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

Pickup and drop-off information
Unavailable

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