90 minutes to experience nature, private open-air baths, and glamping.

Just a 90-minute drive from the city center, immerse yourself in the pristine nature surrounded by the national forest and streams of Oku-Boso. Enjoy luxurious moments in detached accommodations with private open-air baths or extraordinary glamping experiences. We offer both simple bell tents and premium tents equipped with showers and toilets, ensuring a comfortable stay without the need to bring anything. BBQ amidst nature is exceptional! Relive the excitement of childhood with a thrilling stay.

  • I stayed in a dome tent. It was equipped with amenities like air conditioning and a refrigerator, similar to a typical hotel, and had a very casual interior design. The meals included a variety of options such as meat and fish, which were highly satisfying. Although there was an issue with the BBQ grill not functioning properly, the staff responded promptly and courteously. I had a very fulfilling glamping experience.

    Yahoo!トラベルユー... 9/9/2025
  • We stayed as a family of three with our 1-year-old child. There was a playground near the tent where our child could play and enjoy getting muddy. The private bath had a great view and was just the right size, making it very relaxing. The BBQ paella was delicious, and even our picky eater enjoyed it. We were also grateful for the free rice provided for children. From the warm welcome to the farewell, everything was handled with care, making it a wonderful trip. It’s a family-friendly facility, and we would love to visit again!

    Yahoo!トラベルユー... 7/1/2025

Facilities and Services

See All
IN15:00~19:00
OUT10:00
Number of rooms15 rooms
Your childPermitted
PetNot allowed
We strictly prohibit the presence of pets.

Notice from the Accommodation

- We do not accept cancellations by phone under any circumstances. If the online Reservation status shows as reserved, the specified Cancellation Fee will be charged.

- In the case of bedwetting, a cleaning fee of 3,000 yen per futon will be charged. If the room key is lost, a fee of 5,000 yen will be charged. Smoking inside the room will incur a cleaning fee of 50,000 yen.

- Guests who make a Reservation by the day before may be contacted. If we are unable to reach you, your Reservation may be canceled. For Reservations exceeding 100,000 yen, we may require an advance payment.

- Pets are not allowed at our facility. If you bring a pet on the day of your stay, your Reservation will be canceled, and the specified Cancellation Fee will be charged. If a pet is brought into the guest room without permission, a fee of 30,000 yen will be charged as a Cancellation Fee and cleaning fee.

- Our staff is unavailable before 2:00 PM, so entry to the facility is not possible. Entry before 3:00 PM is limited to specific Plans. Changing the payment method on-site will incur an 8% handling fee.

[For Guests Reserving Detached Rooms with Open-Air Baths]
For breakfast, you can choose between:
- "Hot sandwiches on the room terrace"
- "Japanese breakfast at the dining area"
(Hot sandwiches are not available for glamping guests.)
Please specify your choice in the remarks column.

【Time Sale】<Glamping> Limited Time Offer: Up to 30% OFF! (Standard BBQ)

IN 15:00~19:00
OUT 10:00
¥24,200
Dinner and Breakfast included ; 2 peopleTax included¥19,360
(USD 121.48)

【Glamping】Retreat in Nature! Savor "Ise Lobster" (Seafood BBQ)

IN 15:00~19:00
OUT 10:00
¥29,700
Dinner and Breakfast included ; 2 peopleTax included¥23,760
(USD 149.09)

[Main Building Japanese-Style Room - Standard] Enjoy the Great Outdoors! One Free Private Open-Air Bath Session (Standard BBQ)

IN 15:00~19:00
OUT 10:00
¥29,800
Dinner and Breakfast included ; 2 peopleTax included¥23,840
(USD 149.59)

【Time Sale】<Glamping> Limited Time Offer: Up to 30% OFF! (Standard BBQ)

IN 15:00~19:00
OUT 10:00
¥33,000
Dinner and Breakfast included ; 2 peopleTax included¥26,400
(USD 165.66)

【Glamping】Retreat in Nature! Savor "Ise Lobster" (Seafood BBQ)

IN 15:00~19:00
OUT 10:00
¥38,500
Dinner and Breakfast included ; 2 peopleTax included¥30,800
(USD 193.27)

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Introduction of the Accommodation

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Glamping
Glamping
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Glamping
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Glamping

Glamping

Enjoy the great outdoors at a Property surrounded by the clear streams of Oku Boso.

Hanayamasui is located approximately 90 minutes from the city center. Surrounded by nature, you can hear the gentle sound of a flowing river and experience the changing seasons. Enjoy a relaxing time in this rich natural environment, listening to the sounds of rivers, waterfalls, wild birds, and deer while gazing at a sky full of stars.

Example of a guest room
Guest room

Enjoy convenient and comfortable outdoor "Glamping" along with "Detached one-unit rental Room" offering luxurious moments with a private open-air bath. Choose your preferred Room to suit your way of spending time.

Meal example
Meal

Enjoy a "Private Barbecue" on the exclusive terrace (guest room, glamping). Savor the abundant delicacies of Chiba's mountains and seas.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Hot Springs & Baths
    Hot Springs & Baths
  • Facilities & Services
    Facilities & Services
  • Meal
    Meal

Basic Information

Card information
Credit card payments not accepted on site.
Pets
Not allowed
We strictly prohibit the presence of pets.
BreakfastThere is no information about breakfast.
Your child
You can stay.
【Notice】 In the event that a child accidentally "bed-wets," a cleaning fee will be charged. Regardless of the extent, if confirmed by our facility, the fee will be applied. This also applies if reported by the customer. Therefore, for children who may be at risk, please bring protective sheets or other preventive measures.
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

Overall Score
3.82
(11)
  • Rooms & Amenities
    3.64
  • Facility
    3.45
  • Hospitality & Service
    4.64
  • Meals
    4.45
  • Onsen & Bath
    3.18
  • Satisfaction
    3.55

*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 PrefectureIsumi-gun Otaki-machi Kaisho 49
TEL:+81-80-8713-8787

Less than 90 minutes by car from the city center. Using Aqua Line: Exit at Kisarazu Higashi IC, approximately 40 minutes. Using Ichihara IC: Via Ushiku, approximately 50 minutes.

Parking Information
Fee
Free for guests
Parking time
【Parking Time】Free parking is available from noon on the day of stay until the check-out time.
Parking space
No restrictions
Number of parking spaces
20 cars available outdoor
Valet service
Unavailable
No Reservation required ※ Please call to confirm if arriving with more than 2 vehicles in a group.

Pickup and drop-off information
UnavailableWe do not provide Shuttle Service.
The nearest stations are:
・JR Sotobo Line: 'Kazusa-Okitsu' and 'Awa-Kominato'.
Express trains stop at a few services at Kazusa-Okitsu Station and all services at Awa-Kominato Station. Please use a taxi from there.
・Kominato Railway: 'Yoro Keikoku' or 'Kazusa-Nakano'. Kazusa-Nakano Station is also connected to the Isumi Railway. Please use a taxi from these stations.

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