Relax and unwind with the natural beauty of each season and enjoy the soothing experience of our natural hot spring baths.

A small Property, Mastramp, offering French cuisine made with fresh seafood from Izu and seasonal local vegetables. In the summer of 2023, we completed two distinct types of detached guest rooms. Equipped with a natural hot spring bath and a terrace, you can enjoy a blissful stay while feeling the beauty of nature throughout the seasons. Le bois ("The Forest") Located on a hilltop, this room features a chic and modern atmosphere. The second-floor observatory offers a separate space where you can feel close to the sky and forest. La riviere ("The River") A bright and natural-themed room filled with sunlight. It also includes a private sauna, allowing you to refresh to your heart's content. Relax in a premium suite room filled with the scent of wood.

  • The Accommodation itself is compact, but the detached annex is impressive and offers plenty of space.The meals were distinctive yet delicious.Each dish was thoughtfully prepared.

    白凪 6/28/2026
  • Located in the mountainous region of the Izu Peninsula, this accommodation is built on a sloped site along a narrow, steep road in the outskirts of Ito. The detached building still retains the fresh scent of new wood. More details can be found on the accommodation's website. From the second floor, you can enjoy views of Ito's sea. A river flows through a valley to the south of the property, and you can constantly hear its soothing sounds.The bath features a fan-shaped tub approximately 1.5 meters wide with natural hot spring water at an ideal temperature. The slightly salty water feels warm even during winter. The glass doors on both the south and west sides of the bathroom fully open, with access to a terrace on the west side. While there is another detached building located just below to the south that limits distant views, it offers an atmosphere perfect for enjoying forest bathing.Dinner is served simultaneously in a dining area where all guests gather quietly. For an additional charge, you can turn your main bouillabaisse dish into risotto by adding rice or eggs at your preference.

    赤月兎 12/18/2025

Facilities and Services

See All
  • Hot spring
  • Room with Open-Air Bath
Free-flowing hot spring / Private bath / Sauna / Free shuttle service / Room service
IN15:00~17:30
OUT10:00
Number of rooms6 rooms
PetNot allowed
Your childPermitted
Standard Twin Room
  • Twin
  • 24㎡
  • Capacity 1~2 people

“Bouillabaisse” & Standard Plan with a Private Onsen Bath Fed Directly from the Source

IN 15:00~17:30
OUT 10:00
¥44,600
Dinner and Breakfast included ; 2 peopleTax included¥43,708
(USD 276.19)
Deluxe Twin
  • Twin
  • 34㎡
  • Capacity 1~2 people

“Bouillabaisse” & Standard Plan with a Private Onsen Bath Fed Directly from the Source

IN 15:00~17:30
OUT 10:00
¥46,000
Dinner and Breakfast included ; 2 peopleTax included¥45,080
(USD 284.86)
Japanese-Western style room
  • Japanese-Western room
  • 34㎡
  • Capacity 1~3 people

“Bouillabaisse” & Standard Plan with a Private Onsen Bath Fed Directly from the Source

IN 15:00~17:30
OUT 10:00
¥46,000
Dinner and Breakfast included ; 2 peopleTax included¥45,080
(USD 284.86)

Best-Selling Stays

Rooms With Open-Air Baths Popular At Stays

Accommodation For Guests Requiring Care

Accommodation Suitable For Retirement Celebration

Introduction of the Accommodation

Facilities and Equipment of Accommodation

  • The room
    The room
  • Restaurant
    Restaurant

Notice from the Accommodation

  • Certified as a "Beautiful Skin Onsen"!

    "Have you ever felt that your skin seems to improve after soaking in an Onsen?"

    After a detailed analysis conducted by POLA ORBIS HOLDINGS, our Onsen has been scientifically certified as having skin-beautifying properties.

    Our "Relaxation Booster Onsen" is said to smooth and refine the skin. It is particularly recommended for those who feel roughness or dullness in their complexion.

    The process:
    - The gentle effect of the Onsen helps soften the skin and makes it easier to remove unnecessary keratin (the cause of dullness).
    - Skincare products applied after bathing penetrate more effectively.
    - Resulting in supple, radiant, and healthy-looking skin.

    In addition to relaxation and refreshment, we invite you to experience the unique "skin-beautifying effects" of Mastramp's Onsen.

Basic Information

Card information
VISA / MASTER
Pets
Not allowed
BreakfastMain Building Dining - Starts at 8:30 AM
Your child
You can stay.
Reservations for accommodations with preschool children are not accepted online. Thank you for your understanding.
Room service
Available for use
Available for assistance until 10:00 PM.
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
Private bath
The number of Private bath
3
Business Hours
15:00~09:30
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Both the open-air bath and indoor bath can be used as private baths. Operating Hours: 15:00–23:00 / 7:00–9:30 There are no large public baths (male/female). Please lock the door from the inside and enjoy it as a private bath. During busy periods, it operates on a reservation basis. Details will be provided at check-in.
Room with Open-Air Bath
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring
Remarks
Spring quality and benefits

Hypotonic Weak Alkaline Spring Calcium-Sodium Chloride Spring

Stiff Shoulders, Neuralgia, Sensitivity to Cold

※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.

SaunaAvailable
Hot stone spaNone
OthersWe regret to inform you that this Facility is not barrier-free. There are slopes and stairs on the premises, so please consult with us in advance if you have any concerns. Additionally, we apologize that wheelchairs cannot be used inside the Facility. We kindly ask guests to switch to walking with a cane if necessary.

Reviews

Overall Score
4.52
Wonderful (22)
  • Rooms & Amenities
    4.41
  • Facility
    4.45
  • Hospitality & Service
    4.55
  • Meals
    4.45
  • Onsen & Bath
    4.91
  • Satisfaction
    4.32

*Reviews that have been translated from Japanese.*

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

Access Information

Address
Shizuoka Prefecture370 Oka, Ito City
TEL:+81-557-37-2240

Approximately 5 minutes by car from Ito Station

Parking Information
Fee
Free for guests
Parking time
---
Parking space
No restrictions
Number of parking spaces
6 cars available outdoor
Valet service
Unavailable
If you inform us in advance about large or special vehicles, we will arrange parking space accordingly.

Pickup and drop-off information
Available (Free)Please call us upon your arrival at Ito Station (between 3:00 PM and 5:00 PM).

Frequently Asked Questions

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