About 35 minutes from the city center! A paradise of breathtaking ocean views from every room and Onsen!

A luxurious bayside resort located in Kisarazu, just 35 minutes from the city center. Ryugu-tei is a hotel where you can enjoy breathtaking views from every ocean-view room overlooking Tokyo Bay. The rooms are equipped with 50-inch smart TVs and Simmons beds, ensuring a comfortable stay. All rooms are non-smoking, maintaining a sense of cleanliness, and designated smoking areas are available for smokers. The Onsen facility, a No.1 scale Onsen theme park, offers a variety of baths and relaxation options, including a panoramic Onsen overlooking Tokyo Bay and outdoor and indoor pools. Especially at the panoramic Onsen, you can enjoy a healing time full of Japanese charm, watching the ships pass by during the day and their lights at night. For dining, there is the buffet restaurant "Wakashio-tei," which uses seasonal local ingredients, where you can enjoy dishes prepared in an open kitchen with fresh seafood, meat, and vegetables. The dessert corner is also well-stocked, sure to delight women and children. There are plenty of activities for children, with facilities such as a kids' concept room, kids' garden, and festival land, making it a delight for families. Additionally, with experiences like the dancing water laser show, crescent fireworks, and the tidal flat animal zoo Animal Resort, there is no chance of getting bored during your stay. Within the facility, there is a bridge called the Dream Bridge connecting Ryugu-tei and the spa building, offering a unique experience of walking barefoot on the floor from the hotel to the restaurant and large bath. In this way, Ryugu-tei is a resort hotel that meets diverse needs, offering stunning ocean views, abundant Onsen facilities, gourmet dining, and activities and services that the whole family can enjoy.

  • We stayed here for our summer vacation.This was our second stay, and we really enjoyed the pool and other Facilities.We stayed for two nights, and although the buffet selection did not change, we appreciated the all-you-can-drink alcohol option.On both nights, we were able to watch fireworks, and the kids got very excited in the ride-themed room.They are already saying they want to come again.

    Yahoo!トラベルユー... 8/5/2026
  • Last year, my two grandchildren and I stayed here together after a day trip to the pool. They were completely absorbed in the lazy river and water slides. Between swimming in the red, green, and lavender-colored pools and looking out at the sea, time flew by. The bath area was spacious with many tubs, but it was crowded—probably because it was during summer vacation. Our Room had bunk beds, which delighted the kids, and they had a great time playing games and watching YouTube on projections from a projector on the wall. It turned into the best summer vacation.

    Yahoo!トラベルユー... 7/24/2026

Facilities and Services

See All
  • Pet-friendly
  • Spa facility
Open-air bath / Large public bath / Sauna / Indoor pool / Outdoor pool / Free shuttle service
IN15:00~18:00
OUT10:00
Number of rooms260 rooms
PetPermitted
Your childPermitted

Notice from the Accommodation

[Notice: Suspension of Onsen Water Supply Due to Maintenance of the Large Public Bath Onsen Facilities]
For the time being, we have suspended the supply of Onsen water due to urgent maintenance of the Onsen facilities.
Please note that the large public bath remains available as usual.

[Notice of Full Property Closure]
September 8–10, 2026
December 15–17, 2026
January 13, 2027

[Notice: Ryugutei Closure]
January 6–8, 12–13, 18–22, and 26–28, 2027
March 2–5 and 16–17, 2027

[Notice: Spa Building & Omatsuri Land Closure]
January 19–21, 2027

Guests checking out on Tuesday, September 8; Tuesday, December 15; Wednesday, January 13 (2027); or Tuesday, January 19 (2027) will not be able to use the spa or Omatsuri Land after check-out. Please keep this in mind when making a Reservation.

Colorful Standard
Mar 20, 2026Renovated
  • Twin
  • 33㎡
  • Capacity 2~4 people

Sorry for the great deal! We’ve lowered the price because we’re expecting many group bookings that day!

IN 15:00~18:00
OUT 10:00
¥43,560
Dinner and Breakfast included ; 2 peopleTax included¥33,326
(USD 209.15)

【Mikazuki Standard】Free Flow & Buffet

IN 15:00~18:00
OUT 10:00
¥54,120
Dinner and Breakfast included ; 2 peopleTax included¥41,402
(USD 259.83)
Mar 16, 2024Renovated
  • Triple
  • 33㎡
  • Capacity 2~4 people

Sorry for the great deal! We’ve lowered the price because we’re expecting many group bookings that day!

IN 15:00~18:00
OUT 10:00
¥44,880
Dinner and Breakfast included ; 2 peopleTax included¥34,338
(USD 215.50)

【Mikazuki Standard】Free Flow & Buffet

IN 15:00~18:00
OUT 10:00
¥55,440
Dinner and Breakfast included ; 2 peopleTax included¥42,414
(USD 266.19)
Mar 16, 2024Renovated
  • Triple
  • 33㎡
  • Capacity 2~4 people

Sorry for the great deal! We’ve lowered the price because we’re expecting many group bookings that day!

IN 15:00~18:00
OUT 10:00
¥44,880
Dinner and Breakfast included ; 2 peopleTax included¥34,338
(USD 215.50)

【Mikazuki Standard】Free Flow & Buffet

IN 15:00~18:00
OUT 10:00
¥55,440
Dinner and Breakfast included ; 2 peopleTax included¥42,414
(USD 266.19)

Best-Selling Stays

Rooms With Open-Air Baths Popular At Stays

Popular Accommodation For People In Their 20s

Recommended Accommodation For Travel With Junior High School Students

Baby-Friendly Accommodation With Easy Diaper Changing

Accommodation With ReFa Beauty Items

Introduction of the Accommodation

Resort Room  
Connecting Room
Resort Room Triple Room (Flooring)
Deluxe Japanese-Western Room
Resort Room  
Connecting Room
Resort Room Triple Room (Flooring)
A healing space with an ocean view! Ocean View Room at Ryugutei (Ryugutei)

The rooms at Ryugu-tei boast a stunning ocean view overlooking Tokyo Bay. Each room is equipped with a 50-inch smart TV, allowing you to enjoy the latest entertainment. Additionally, Simmons beds are used to support a comfortable sleep, ensuring a relaxing time. The resort room's triple room comes in two types: flooring and modern Japanese style, both offering views of Tokyo Bay from expansive windows. The connecting room is a family room with two adjoining rooms, ideal for stays with three generations. It features a modern Japanese-Western design, allowing you to enjoy a resort feel in a sophisticated atmosphere. The comfortable Japanese-Western room type offers a calm atmosphere with a panoramic view of Tokyo Bay. The deluxe Japanese-Western room is located on a high floor and is a suite room type with a Japanese room, living room, and bedroom, where you can be impressed by the breathtaking view of Tokyo Bay.

Fuji no Yu
Fuji no Yu
Onsen
Fuji no Yu
Fuji no Yu
Enjoy the breathtaking view of Mt. Fuji and the soothing hot springs!

The scenic Onsen, as its name suggests, offers the greatest charm of enjoying the hot springs while taking in breathtaking views. Especially at "Fuji no Yu," you can enjoy a variety of baths while overlooking the unparalleled scenery of Kanagawa, Tokyo, Chiba, and Tokyo Bay, with the Tanzawa mountain range and Mount Fuji spreading behind Yokohama. This is ideal not only for health promotion but also for refreshing the mind and body. At "Ryugu no Yu," you can fully enjoy the blessings of the hot springs while watching the ships passing through Tokyo Bay during the day and the lights of anchored ships at night. The Japanese-style atmosphere, while being close to the city center, invites you to a dream world that makes you forget the hustle and bustle of the city. Additionally, at Kaiun no Yu, there are one gold and one silver bath each in the men's and women's baths, which are said to bring good luck, financial fortune, and career advancement. This is particularly attractive for those who wish to enhance their fortune while enjoying the Onsen. Kisarazu is also known as the land of the "Three Great Tanuki Legends of Japan," where you can enjoy the famous "Tanuki Bath." This is a unique experience where you can enjoy the Onsen while feeling the local culture.

Pool
Pool
Pool
Pool
Pool
Pool
From outdoor to indoor! Enjoy at the diverse pools of Hotel Mikazuki

The pool at Hotel Mikazuki offers different attractions both outdoors and indoors. Outside, there is a resort area called "Ocean Spa," where you can enjoy the natural scenery with the sea breeze and swaying palm trees. This open-air bathing garden is an ideal space for refreshing the mind and body, providing visitors with a tranquil time. Additionally, Hotel Mikazuki is committed to the SDGs and features a unique pool called "Umi no Mae Furo Maru." This pool is made from a repurposed ship, offering a special experience where you can swim while enjoying views of Tokyo Bay. Indoors, there is an attraction pool called "Aqua Park." Here, various entertainments such as water slides and illumination shows are available for families to enjoy. Being an indoor heated pool, it can be enjoyed all year round regardless of the weather. The garden pool, which opens only during the summer season, features a 250-meter-long lazy river and a children's pool, providing coolness and fun that make you forget the midsummer heat.

Cuisine
Restaurant
Cuisine
Cuisine
Restaurant
Enjoy the Seasonal Flavors! Buffet Restaurant "Wakashio-tei" Overlooking Tokyo Bay

The restaurant "Wakashio-tei" is located in a prime location with a panoramic view of Tokyo Bay, offering guests a liberating dining experience. Here, you can enjoy a buffet-style dining experience featuring Japanese, Western, and Chinese cuisine made with an abundance of seasonal, locally sourced ingredients. The highlight is the live cooking experience, where fresh seafood, meat, and vegetables, carefully selected each season, are prepared right in front of you in an open kitchen. Guests can savor the delicious dishes freshly made with care by the chefs while watching them up close. The dessert corner, which is very popular among women and children, is also well-stocked, and with the dishes and presentations changing with the seasons, there is always something new to discover no matter how many times you visit.

Facilities and Equipment of Accommodation

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

Notice from the Accommodation

  • Notice of Temporary Closure Due to Facility Maintenance

    [Notice of Temporary Suspension of Onsen Water Supply Due to Maintenance of the Large Public Bath Onsen System]
    For the time being, we have suspended the supply of Onsen water due to urgent maintenance work on the Onsen system.
    Please note that the large public bath remains available as usual.

    [Notice of Full Property Closure]
    September 8–10, 2026
    December 15–17, 2026
    January 13, 2027

    [Notice of Ryugutei Closure]
    January 6–8, 12–13, 18–22, and 26–28, 2027
    March 2–5 and 16–17, 2027

    [Notice of Spa Building & Omatsuri Land Closure]
    January 19–21, 2027

    Guests checking out on Tuesday, September 8; Tuesday, December 15; Wednesday, January 13 (2027); or Tuesday, January 19 (2027) will not be able to use the spa or Omatsuri Land after check-out. Please keep this in mind when making a Reservation.

  • [Notice of Traffic Restrictions Due to the Aqualine Marathon]

    The Tokyo Bay Aqua-Line Marathon will be held on Sunday, November 8, 2026.
    Please note that traffic restrictions will be in place on the Aqua-Line and surrounding roads at certain times on the day of the event.
    For details, please check the official Aqua-Line Marathon website.

Basic Information

TaxesAn additional Hot Spring Tax of 150 yen applies to adults only.
Card information
VISA / MASTER / JCB / AMEX / DINERS / Debit card
Pets
Permitted
A dedicated dog-only pet Hotel is available in a separate building. Please note that dogs are not allowed in guest rooms.
BreakfastBreakfast is served as a Japanese and Western buffet, featuring local specialties such as clam dishes.
Your child
You can stay.
Elementary school children: 70% of the adult rate, Preschool children aged 4–6: 50% of the adult rate Children aged 2–3: Facility usage fee of JPY 4,400 Children aged 0–1 stay free when using Child Sharing Existing Bedding. Stroller rental (free) Kids’ garden (paid)
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
Outdoor pool
Available period
---
Business Hours
10:00~18:00
Final admission time
---
Fee(Guest)
Free
Fee(Non-guest)
---
Children's pool
Available
Age restriction
There is no age restriction; however, children who are not yet potty-trained are required to wear swim diapers together with a swimsuit.
Pool shape
Rectangular
Pool size


Hotel guests may use the spa facilities free of charge on the day of their stay. “Ocean Spa” (outdoor pool & spa) This open-air bathing garden, where you can fully enjoy breathtaking natural scenery, is ideal for refreshing body and mind, relieving stress, and promoting wellness. *Ocean Spa is open year-round (except during severe weather).*
Indoor pool
Available period
---
Business Hours
10:00~22:00
Final admission time
---
Fee(Guest)
Free
Fee(Non-guest)
---
Children's pool
None
Age restriction
There is no age restriction; however, children who are not yet potty-trained are required to wear swim diapers along with their swimsuit.
Pool shape
Irregular shape
Pool size


Water depth 110cm110cm
Hotel guests may use the spa Facility free of charge on the day of stay. "Indoor Attraction Pool" An Onsen paradise where you can enjoy a full range of spa offerings all night long. Relax and refresh while taking in spectacular views overlooking the Pacific Ocean.
Esthetic Massage
Available
Fitness gym
None
Public Bath
The number of Public Bath
20
Business Hours
11:00~08:45
Hot spring
None
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
Closed from 12:00 AM to 5:00 AM.
Open-air bath
The number of Open-air bath
20
Business Hours
11:00~08:45
Hot spring
None
Free-flowing
None
Milky hot spring water
None
Additional Information
(Heating, Adding Water)
Remarks
Closed from 11:00 PM to 7:00 AM.
SaunaAvailable
Hot stone spaNone
Others[Other Accepted Credit Cards] UC, DC, NICOS Payment is accepted in a single lump sum only.

Reviews

Overall Score
4.23
Good (218)
  • Rooms & Amenities
    4.30
  • Facility
    4.13
  • Hospitality & Service
    4.22
  • Meals
    4.29
  • Onsen & Bath
    4.23
  • Satisfaction
    4.19

*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 Prefecture1 Kitahama, Kisarazu City
TEL:+81-438-41-8111

About 5 minutes by car from Kisarazu-Kaneda Interchange.
About 15 minutes by taxi from Kisarazu Station on the JR Uchibo Line.

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

Pickup and drop-off information
Available (Free)A complimentary shuttle bus runs on a regular schedule from JR Kisarazu Station and the Kaneda Express Bus Terminal.
*Schedules may vary by season and day of the week, so please contact us in advance.*

Frequently Asked Questions

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