All rooms offer ocean views, with an Onsen that blends seamlessly with the sea for a truly relaxing experience.

A Property with all rooms offering ocean views, situated on a hill overlooking Kasado Bay. Fully renovated in 2016, it has been reborn as an even more charming destination. The views from the Onsen are spectacular, featuring an open-air bath with a panoramic view of the Seto Inland Sea and an infinity bath that seamlessly blends with the sea and sky, offering an unparalleled sense of openness and breathtaking scenery. For dining, enjoy seafood dishes that combine Japanese and Western styles, made with an abundance of fresh ingredients from the natural harbor, including the specialty "Kasado Flounder." Embark on a journey to Yamaguchi, where the sea meets the heart.

  • The Room was spacious with a great ocean view, and both the meals and the Onsen were excellent. Here are a few highlights: - We chose dinner from 17:30, and one alcoholic drink was free. - The flounder tempura was light and fluffy, and absolutely delicious. - Dinner was served as a course meal, while dessert was offered buffet-style—such a luxurious setup. - The ocean view from the large public bath was wonderful, and all the showers and hair dryers were ReFa products. - What impressed me most was how thoroughly cleaned everything was. Although the Room itself didn’t seem particularly new, it was spotless—especially the washbasin area, which looked older but had no water stains at all and gleamed in every corner. It made our stay very comfortable. There were many great points like these, and we were very satisfied with our stay. Thank you very much.

    Yahoo!トラベルユー... 9/23/2026
  • I had visited before for a day-trip Onsen and already knew the baths were great, but the view from the Room was outstanding as well.The flounder sashimi was very fresh with a pleasantly firm texture and was absolutely delicious.I would love to stay here again.

    Yahoo!トラベルユー... 8/29/2026

Facilities and Services

See All
  • Hot spring
  • Accessibility
Open-air bath / Large public bath / Sauna
IN15:00~20:00
OUT10:00
Number of rooms37 rooms
PetNot allowed
Your childPermitted

[No Meals Included] <No meals> Refresh in a natural Onsen with breathtaking views. Enjoy a simple stay for a flexible trip.

IN 15:00~21:00
OUT 10:00
¥17,100~
No meals ; 2 peopleTax included¥13,253〜
(USD 83.97)

[Relax & Unwind / Breakfast Only] <1 Night with Breakfast> Refresh your body and mind. Japanese & Western buffet breakfast with sweeping ocean views

IN 15:00~21:00
OUT 10:00
¥21,900~
Breakfast included ; 2 peopleTax included¥16,973〜
(USD 107.54)

[No Meals Included] <No meals> Refresh in a natural Onsen with breathtaking views. Enjoy a simple stay for a flexible trip.

IN 15:00~21:00
OUT 10:00
¥20,400~
No meals ; 2 peopleTax included¥15,810〜
(USD 100.17)

[Relax & Unwind / Breakfast Only] <1 Night with Breakfast> Refresh your body and mind. Japanese & Western buffet breakfast with sweeping ocean views

IN 15:00~21:00
OUT 10:00
¥25,200~
Breakfast included ; 2 peopleTax included¥19,530〜
(USD 123.74)

[No Meals Included] <No meals> Refresh in a natural Onsen with breathtaking views. Enjoy a simple stay for a flexible trip.

IN 15:00~21:00
OUT 10:00
¥23,700~
No meals ; 2 peopleTax included¥18,368〜
(USD 116.37)

[Relax & Unwind / Breakfast Only] <1 Night with Breakfast> Refresh your body and mind. Japanese & Western buffet breakfast with sweeping ocean views

IN 15:00~21:00
OUT 10:00
¥28,500~
Breakfast included ; 2 peopleTax included¥22,088〜
(USD 139.94)

Best-Selling Stays

Rooms With Open-Air Baths Popular At Stays

Onsen Accommodation With Delicious Buffet

Stays Popular For Private Beach Feel

Accommodation With The Latest Beauty Devices

Accommodation With Easy Access To The Memorial Hall

Introduction of the Accommodation

Ōshiro Onsen "潮騒の湯"

Oshiro Onsen "Shiosai no Yu"

Ōshiro Onsen "Shiosai no Yu" boasts an open-air bath with a stunning view of the Seto Inland Sea. In addition to two unique open-air baths and a spacious indoor bath, there are also carbonated baths and a sauna. Enjoy a relaxing time.

Kudamatsu City's specialty: "Kasado Flounder"

Kudamatsu City's specialty: "Kasado Hirame"

"Kasado Hirame," farmed in Kasado Island, is a premium delicacy from Kudamatsu City, known for its rich flavor and subtle sweetness.

Guest room

Rooms - All rooms feature an open and expansive ocean view.

In front of you lies Kasado Bay, renowned for its stunning sunset views. You can enjoy this dynamic and breathtaking scenery from all Rooms.

Sunset

Sunset

Please enjoy the sunset over Kasado Bay from the large public bath or your Room.

Nagaoka Gaishi Statue

Nagaoka Gaishi Statue (2-minute walk)

The park, located about a 2-minute walk from the Facility, features a statue of Gaishi Nagaoka, a "pioneer of skiing and Japanese aviation." This statue, built overlooking the Kudamatsu city area, continues to observe the city's development.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Restaurant
    Restaurant
  • Facilities & Services
    Facilities & Services

Basic Information

Taxes*Hot Spring Tax of 150 yen per adult (children aged 0-12 are free) will be charged separately.
Card information
VISA / MASTER / JCB / AMEX / DINERS
Pets
Not allowed
BreakfastJapanese and Western Buffet
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
---
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
Remarks
- Bathroom amenities: Shampoo, conditioner, toiletries, hairdryer - Bathing hours: 15:00–24:00, 6:00–9:00 - Capacity: 35 people
Open-air bath
The number of Open-air bath
2
Business Hours
---
Hot spring
Available
Free-flowing
None
Milky hot spring water
None
Additional Information
Remarks
- Bathroom amenities: Shampoo, conditioner, toiletries, hairdryer - Capacity: 10 people - View: Ocean
Spring quality and benefits

Sodium-Calcium Chloride Cold Mineral Spring

Neuralgia, muscle pain, joint pain, frozen shoulder, motor paralysis, joint stiffness, bruises, sprains, chronic digestive disorders, hemorrhoids, sensitivity to cold, fatigue recovery, chronic skin diseases

SaunaAvailable
Hot stone spaNone
OthersUC, DC, NICOS

Reviews

Overall Score
4.72
The best (24)
  • Rooms & Amenities
    4.63
  • Facility
    4.71
  • Hospitality & Service
    4.71
  • Meals
    4.71
  • Onsen & Bath
    4.75
  • Satisfaction
    4.79

*Reviews that have been translated from Japanese.*

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

Access Information

Address
Yamaguchi Prefecture14-1 Kasado Island, Kudamatsu City
TEL:+81-833-52-0138

Approximately 12 minutes by car from JR Kudamatsu Station / Approximately 20 minutes by car from Sanyo Expressway Tokuyama-Higashi IC

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

Pickup and drop-off information
Unavailable

Frequently Asked Questions

Find by tourist destination