About 35 minutes from the city center! A paradise of breathtaking ocean views from every room and an 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 for one night and two days with my husband and our children (3 years old and 10 months old).Since we visited in winter, the spas we could use were limited, but we were able to soak plenty and were very satisfied!And because it was the off-season, there were fewer people, so we could relax at our own pace. It’s perfect for families with children.

    Yahoo!トラベルユー... 3/1/2026
  • We stayed on a weekday in February during the off-season as a family (our 5-year-old daughter and 2-year-old son). We traveled from Saitama, and it was very convenient to take the direct highway bus from Tokyo Station to the Hotel. We arrived around 10:30, let the kids play to their heart’s content with the Plarail trains in the welcome area, had lunch at Festival Land, and enjoyed the pool. The men’s changing rooms and baths are on the 1st floor and the women’s are on the 3rd floor, so my husband and I each took one child, which made getting changed and going to the bath easy. For our Room, we chose a vehicle-themed Room. The kids were thrilled, and it was also very comfortable because two double beds were pushed together. At the buffet, they had carts you can use while keeping a small child seated in them, and if a child fell asleep they quickly lent us something like a bouncer—overall it was truly easy to spend time there. It was especially appreciated for families with children. We’d like to stay again in summer.

    Yahoo!トラベルユー... 2/19/2026

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 of Temporary Suspension of Onsen Water Supply Due to Large Public Bath Maintenance]
From Friday, March 20, 2026, until further notice, we will suspend the supply of Onsen water to some tubs in the large public bath due to urgent maintenance of the Onsen facilities.
The large public bath will remain available as usual.
We will announce the reopening date as soon as it is decided.
We apologize for any inconvenience and appreciate your understanding as this measure is necessary for safe operation of our facilities.


[Notice of Temporary Closure for Maintenance]
June 29–July 1, 2026
September 8–September 10, 2026
The entire property will be closed during the above periods.
Guests checking out on Monday, June 29 or Tuesday, September 8 cannot use the spa after check-out due to the full closure, so please note this when making a Reservation.

【Mikazuki Standard】Free Flow & Buffet

IN 15:00~19:00
OUT 10:00
¥42,900
Dinner and Breakfast included ; 2 peopleTax included¥27,424
(USD 172.08)

Weekday Only! Plan with Chinese Dinner & Breakfast Buffet

IN 15:00~19:00
OUT 10:00
¥42,900
Dinner and Breakfast included ; 2 peopleTax included¥27,424
(USD 172.08)
Mar 16, 2024Renovated
  • Triple
  • 33㎡
  • Capacity 2~4 people

【Mikazuki Standard】Free Flow & Buffet

IN 15:00~18:00
OUT 10:00
¥42,900
Dinner and Breakfast included ; 2 peopleTax included¥27,424
(USD 172.08)

Weekday Only! Plan with Chinese Dinner & Breakfast Buffet

IN 15:00~18:00
OUT 10:00
¥42,900
Dinner and Breakfast included ; 2 peopleTax included¥27,424
(USD 172.08)
Mar 16, 2024Renovated
  • Triple
  • 33㎡
  • Capacity 2~4 people

【Mikazuki Standard】Free Flow & Buffet

IN 15:00~18:00
OUT 10:00
¥42,900
Dinner and Breakfast included ; 2 peopleTax included¥27,424
(USD 172.08)

Weekday Only! Plan with Chinese Dinner & Breakfast Buffet

IN 15:00~18:00
OUT 10:00
¥42,900
Dinner and Breakfast included ; 2 peopleTax included¥27,424
(USD 172.08)

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Hotel Popular For Public Bath

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Relaxing Japanese-Style Accommodation

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Stays Popular For Open-Air Bath

Recommended Accommodation For Honeymoon

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 Suspension of Onsen Water Supply Due to Large Public Bath Maintenance]
    From Friday, March 20, 2026, until further notice, we will suspend the supply of Onsen water to some tubs in the large public bath due to urgent maintenance of the Onsen facilities.
    The large public bath will remain available as usual.
    We will announce the reopening date as soon as it is decided.
    We apologize for any inconvenience and appreciate your understanding as this measure is necessary for safe operation of our facilities.


    [Notice of Temporary Closure for Maintenance]
    June 29–July 1, 2026
    September 8–September 10, 2026
    The entire property will be closed during the above periods.
    Guests checking out on Monday, June 29 and Tuesday, September 8 will not be able to use the spa after check-out due to the full-property closure. Please keep this in mind when making a Reservation.

Basic Information

TaxesA Hot Spring Tax of JPY 150 will be charged separately for adults only.
Card information
VISA / MASTER / JCB / AMEX / DINERS / Debit card
Pets
Permitted
A dog-only pet Hotel is available in a separate building. Please note that pets are not allowed in guest rooms.
BreakfastBreakfast is served as a Japanese and Western buffet, featuring local dishes such as clam specialties.
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 of charge 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 their swimsuit.
Pool shape
Rectangular
Pool size


Hotel guests may use the spa Facility free of charge (on the day of 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 health. *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 together with a swimsuit.
Pool shape
Irregular shape
Pool size


Water depth 110cm110cm
Hotel guests may use the spa facilities free of charge on the day of their stay. “Indoor Attraction Pool” An Onsen paradise where you can enjoy a wide range of spa experiences 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 payment only.

Reviews

Overall Score
4.17
(182)
  • Rooms & Amenities
    4.24
  • Facility
    4.05
  • Hospitality & Service
    4.15
  • Meals
    4.28
  • Onsen & Bath
    4.15
  • Satisfaction
    4.15

*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 the 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 free shuttle bus operates on a regular schedule from JR Kisarazu Station and the Kaneda Expressway Bus Terminal.
*Schedules may vary by season and day of the week, so please contact us in advance.*

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