Ryugujo Spa Hotel Mikazuki Ryugutei
Reference price as of October 12, 2026 (stay 2026-11-07). US$ is an approximate conversion from yen. Check the booking site for actual rates.
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forumWhat families say
Ryugutei is the family wing of Ryugujo Hotel Mikazuki, one of the largest spa and entertainment resorts in the Kanto region. Families praise the year-round Aqua Park indoor heated pool, the summer-only 250-meter Garden Pool, entertainment facilities such as Omatsuri Land and Ryugujo Station, and the themed rooms based on railways, vehicles and a baseball team. Please note that onsen supply to the communal bath has been temporarily suspended since March 2026, though ordinary bathing is still available.
Kids Facilities
Aqua Park (indoor heated pool)
Aqua Park (indoor heated pool)
An indoor heated pool open year-round, with a water slide and an illumination show.
Garden Pool (summer only)
Garden Pool (summer only)
- calendar_monthSeason:Summer only
An outdoor pool with ocean views and a 250-meter lazy river. It is open for the summer season only, from Saturday, June 13 to Sunday, September 27, 2026.
Ocean Spa (outdoor pool)
Ocean Spa (outdoor pool)
- calendar_monthSeason:Confirm with hotel
An outdoor pool where palm trees sway in the sea breeze, a relaxing place to soak up the sunshine.
Omatsuri Land
Omatsuri Land
An indoor play space packed with old-fashioned festival games, including a shooting gallery, ring toss and an arcade corner.
Ryugujo Station
Ryugujo Station
A play space that realistically recreates a retired Isumi Railway train car and a Kominato Railway bus. Inside the car there are climbing play structures and a driver's-seat experience, and a giant Plarail train set is set up in the waiting room.
Kids' themed rooms / railway and bus rooms / Chiba Lotte Marines room
Kids' themed rooms / railway and bus rooms / Chiba Lotte Marines room
A varied lineup of themed rooms: kids' themed rooms on ocean, forest and sky themes (with a climbing wall, a jungle gym and educational toys), Kominato Railway, Isumi Railway, steam-locomotive, adventure and construction-vehicle rooms, a Chiba Lotte Marines room, a modern Japanese-style room, and the Phiten Room using Metax technology.
Communal bath (hot spring equipment temporarily under maintenance)
Communal bath (hot spring equipment temporarily under maintenance)
A communal bath with an open-air bath overlooking the sea and a variety of tubs.
- •Since March 20, 2026, onsen supply to some of the tubs in the communal bath has been suspended for emergency maintenance of the hot spring equipment; the communal bath itself remains open as usual, and the date of resumption is undecided.
- •The open-air bath at the Spa Wing's men's communal bath, Ryugu no Yu, is partly closed (per a notice dated April 4, 2026).
- •The in-room bathtubs use regular water, not onsen water.
Kids Amenity Bar
Kids Amenity Bar
A corner set up in Ryugutei where families traveling with babies and toddlers can borrow handy items. Children's amenities such as animal-motif toothbrushes can also be chosen freely.
- •Quantities are limited, and some requests may not be able to be met.
Categories
Overview
Ryugutei is the family lodging wing of Ryugujo Spa Hotel Mikazuki, one of the largest spa resorts in the Kanto region, in Kisarazu, Chiba. A wide range of play spaces is gathered here: the year-round indoor heated pool Aqua Park (with a water slide), the 250-meter summer-only Garden Pool (June 13 to September 27, 2026), the outdoor Ocean Spa, the indoor entertainment space Omatsuri Land, Ryugujo Station recreating an Isumi Railway train car, and Animal Resort NOAH. The guest rooms include a varied lineup of kids' themed rooms based on railways, buses, vehicles and the Chiba Lotte Marines.
Ryugutei is the family lodging wing inside Ryugujo Spa Hotel Mikazuki in Kisarazu, Chiba. It is about 5 minutes from the Kisarazu-Kaneda IC on the Tokyo Bay Aqua-Line, and a free shuttle bus runs from JR Kisarazu Station and the Kaneda Highway Bus Terminal.
Water and Play
Aqua Park (an indoor heated pool with a water slide, open year-round), the Garden Pool (summer only, June 13 to September 27, 2026, a 250-meter lazy river), Ocean Spa (an outdoor pool), Omatsuri Land (an indoor space of festival-stall games including a shooting gallery, ring toss and an arcade corner), Ryugujo Station (a recreated retired Isumi Railway train car, with a driver's-seat experience and a giant Plarail train set), Animal Resort NOAH (a zoo on the tidal flats) and Mikazuki Strawberry Park.
Communal Bath
A communal bath with an open-air bath overlooking the sea and a variety of tubs. Please note that since March 20, 2026, onsen supply has been suspended for emergency maintenance of the hot spring equipment; the communal bath itself remains open as usual, and the date of resumption is undecided. The open-air bath at the Spa Wing's men's communal bath, Ryugu no Yu, is partly closed.
Guest Rooms
Every room has its own bath and toilet, and the in-room bathtubs use regular water, not onsen water. Room types include the Standard Room (about 34 sq m, sleeping up to 4), the Special Room (about 50 sq m, sleeping up to 6), the Deluxe Ocean and Deluxe Theater rooms, and Colorful Standard rooms. The themed lineup is wide-ranging as well: kids' themed rooms (ocean, forest and sky themes, with a climbing wall, a jungle gym and educational toys), railway and bus rooms (Kominato Railway, Isumi Railway, steam-locomotive rooms and more), a Chiba Lotte Marines room, and the Phiten Room on the 6th floor, which uses Phiten technology.
Other Services
Ryugutei has a Kids Amenity Bar with items available to borrow. Every room comes with a humidifying air purifier and a water server dispensing room-temperature water. The fireworks displays every Friday, Saturday and Sunday at 8:30 p.m. are popular too.
Access & Information
| location_onAddress | 1 Kitahama-cho, Kisarazu-shi, Chiba 292-0006 |
|---|---|
| directions_carAccess | About 5 minutes after exiting at the Kisarazu-Kaneda IC on the Tokyo Bay Aqua-Line. A free shuttle bus runs from JR Kisarazu Station and the Kaneda Highway Bus Terminal. |
| trainNearest station | Kisarazu Station |
| local_parkingParking | There is no parking charge for overnight guests. For day-use spa visitors, the first 5 hours are free, then 300 yen per hour after that (tax included). |
| callPhone | +81-438-41-8111 |
| paymentsCards | VISA, JCB, American Express, Diners Club, UC, DC, NICOS, Mastercard |
| languageOfficial site | https://www.mikazuki.co.jp/ryugujo/open_in_new |
Map
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Reference price as of October 12, 2026 (stay 2026-11-07). US$ is an approximate conversion from yen. Check the booking site for actual rates.
Frequently Asked Questions
What ages is Ryugujo Spa Hotel Mikazuki Ryugutei best suited to?
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It has facilities that work especially well for babies and toddlers (ages 0 to 2) and children aged 3 and over. There is no age limit, and families with children of any age can stay.
Is there parking at Ryugujo Spa Hotel Mikazuki Ryugutei?
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Parking: There is no parking charge for overnight guests. For day-use spa visitors, the first 5 hours are free, then 300 yen per hour after that (tax included).
How do you get to Ryugujo Spa Hotel Mikazuki Ryugutei?
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About 5 minutes after exiting at the Kisarazu-Kaneda IC on the Tokyo Bay Aqua-Line. A free shuttle bus runs from JR Kisarazu Station and the Kaneda Highway Bus Terminal.
How do we book for a child aged 4 or over?
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Children from age 4 who have not yet started elementary school are booked on a plan that includes meals and futon bedding.
Is there an extra charge if we bring a child aged 2 or 3?
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Children aged 2 to 3 are booked as young children without bedding or meals, and a separate facility usage fee of 4,400 yen including tax is payable on site.
How deep are the children's pools?
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There are two kinds of kids' pools, 30 cm and 40 cm deep, built so that even small children can enjoy the water with peace of mind.
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Information on this page was compiled by directly consulting Official website, Rakuten Travel, Jalan (last verified: August 2026). Prices, availability and seasonal operations change. Please check each booking site for the latest information.
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