Enjoy “irreplaceable moments” with family and friends while having the lagoon stretching out before you all to yourselves.

A serene lagoon nurtured by the sea of Sotobo—Hiraisa. Create unforgettable moments with your family and friends in this "special place," where your unique story begins, as you enjoy exclusive views of the lagoon right before your eyes. Just an 80-minute drive from Tokyo, a private villa facing the tranquil lagoon has been newly established. Protected by a natural sandbar, Hiraisa Lagoon offers breathtaking views and a space to relax without worrying about prying eyes. Enjoy precious time with loved ones amidst the beauty of nature in this extraordinary retreat. Unwind and indulge in a vacation that soothes both body and soul.

Reviews

(2)
The facility's overall score is hidden because the specified number of cases has not been reached.

Facilities and Services

See All
Sauna / Free shuttle service
IN15:00~24:00
OUT11:00
Number of rooms1 room
PetNot allowed
Your childPermitted

Notice from the Accommodation

[Catering]
Catering is available at this Facility.
Please arrange it yourself by the day of use.

[Loft & Ladder Safety]
- Access to the loft is via a ladder.
As the stairs/ladder to the loft are steep, please use with care.
Children should use it only under parental supervision, or please refrain from using it.
- We are not responsible for any accidents or injuries during use.

[Sauna Use for Children]
- Please refrain from using the sauna for children aged 5 and under.
If small children use the sauna, they must be accompanied by an adult at all times.
*We are not responsible for any accidents related to sauna use.*

- Sauna hours are until **23:00**. Thank you for your understanding.
- If using after 21:00, please keep noise to a minimum out of consideration for neighbors.

- Please note that the sauna may be temporarily unavailable due to maintenance, etc. (We will inform you in advance.)
- Swimwear is required (use while nude or in underwear is prohibited).
- In case of damage due to misuse, you will be required to pay the full cost of repairs/replacement.

  • Vacation rental
  • 91.4㎡
  • Capacity 1~7 people

"A place where the sky meets the sea, just for us."

IN 15:00~24:00
OUT 11:00
¥69,000
No meals ; 2 peopleTax included¥67,620
(USD 423.84)

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Introduction of the Accommodation

Sauna and Cold Bath
Sauna and Cold Bath
Sauna and Cold Bath
Sauna and Cold Bath
Sauna and Cold Bath
Sauna and Cold Bath

A private sauna equipped with a prestigious Harvia sauna stove from Finland. Through the large window facing the lagoon, enjoy serene views that deeply rejuvenate your mind and body. The seamless flow from the bath area to the sauna allows you to carry the warmth of your bath directly into the sauna and smoothly transition to a cold plunge pool. Outside, there is a **3m x 1.2m plunge pool**, offering refreshing coolness to soothe your heated body and providing a blissful moment to clear both mind and body. Whether morning, noon, or night, relax in harmony with the sound of the wind and enjoy moments of pure tranquility.

BBQ Space
BBQ Space
BBQ Space
BBQ Space
BBQ Space
BBQ Space

Another living space connected to nature. We offer a covered BBQ house. This open and comfortable space, usable even on rainy days, is equipped with a professional-grade stainless steel kitchen facility. You can bring your own ingredients and enjoy freely, or opt for our optional catering BBQ service. Day or night, gather around the fire with the sea breeze in the air and create unforgettable memories of your trip filled with laughter.

Garden Space
Garden Space
Garden Space
Garden Space
Garden Space

Escape the everyday and simply relax deeply in tranquility. Stroll through the garden, and you might spot tiny crabs making an appearance. For children, small discoveries in nature await. Listen to the sound of waves, and surrender your heart to a night under a star-filled sky reflected in the lagoon. This is a place where time fades away, allowing you to breathe deeply and freely.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Hot Springs & Baths
    Hot Springs & Baths
  • Surroundings & Others
    Surroundings & Others

Basic Information

Card information
Credit card payments not accepted on site.
Pets
Not allowed
BreakfastThere is no information about breakfast.
Your child
You can stay.
Children of elementary school age and under stay free of charge. The stairs to the loft are steep, and the living room floor is tiled. Please take extra care when staying with small children. Please note that we cannot be held responsible for any injuries that occur within this Accommodation. - Please refrain from using the sauna for children aged 5 and under. - If small children use the sauna, they must be accompanied by an adult.
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
SaunaAvailable
Hot stone spaNone
Others- The living room floor is tiled, so please take extra care, especially with small children. We cannot be held responsible for any injuries caused by falls. - We are not responsible for any accidents or damages due to natural disasters, negligence, or violations of the house rules. - We are not responsible for theft of or damage to guests’ belongings (including vehicles). - Any lost items can be returned by cash on delivery (shipping charges paid by the recipient). - If you lose the key, we will charge JPY 100,000 as a replacement fee.

Reviews

The overall facility score is not displayed because the required number of reviews has not been reached.

*Reviews that have been translated from Japanese.*

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

  • 5.00
    埼玉人参
    Date Posted: 5/15/2026

    Awesome.

    You have to go—it's absolutely amazing. Seriously.

Access Information

Address
Chiba Prefecture4457-53 Izumi, Misaki-cho, Isumi City
TEL:+81-90-2400-3864

By car
Approx. 40 minutes from Ichihara-Tsurumai IC
Approx. 30 minutes from Togane IC via the Togane–Kujukuri Toll Road

By train
25-minute walk from Sannmon Station on the JR Sotobo Line

Parking Information
Fee
Free for guests
Parking time
3:00 PM–11:00 AM the next day
Parking space
Overall length 5 m Vehicle width 1.9 m Vehicle height ---
Number of parking spaces
3 cars available outdoor
Valet service
Unavailable
- Parking is available for up to 3 vehicles. One space is for a compact passenger car. Nearby, there are also parking spaces for 2 standard-sized cars.

- We are not responsible for any accidents, theft, or other incidents in the parking area.

Pickup and drop-off information
Available (Free)Shuttle Service is available from nearby stations. Please contact us when making your Reservation.

Frequently Asked Questions

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