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Kids Stay
From ¥53,106/ per night (2 adults)

Reference price as of September 19, 2026 (stay date 2026-10-10). Please check the booking site for actual rates.

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forumWhat families say

Rakuten Travel rating 4.11 out of 5 (1,605 reviews). Guests praise the staff's child-friendly service, and report that at the dinner buffet the dishes children like and the sweets were set out in a separate area, which made it easy to serve food while looking after children. They also rate being able to use ReFa hair dryers at the rooftop pool and the communal bath. On the other hand, some guests felt the dishes were laid out in a way that was hard to follow and that the selection seemed small.

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Kids Facilities

Spa Dome Aqua Palace

Indoor

An indoor pool and an outdoor pool where you play in swimwear; in 2026 the outdoor pool is open from July 7 to September 30. Staying guests can enter both spas free of charge on the day of arrival and the following day (in summer, use on the day of checkout costs 550 yen for adults and 330 yen for children aged 3 through elementary school). There is no children's pool, so please have an adult accompany children. Babies and toddlers may use the pools if they wear a swim diaper, and swim diapers in M and L sizes are sold at Aqua Palace.

Kids' corner

Indoor
  • paymentsPrice:Free for guests

A corner just for children on the 2nd floor of the hotel, with coloring sheets, origami and other things for them to enjoy. It is open from 8 a.m. to 9 p.m. and free to use. Parents are responsible for supervising their children in the kids' corner, including any accidents or trouble there.

Baby care room and nursing room

Indoor

There is a diaper-changing table inside the 2nd-floor kids' corner, along with hot water for formula. A private nursing room for women only is also available, open on the hotel's 2nd floor from 8 a.m. to 9 p.m. Aqua Palace has a nursing room on the 6th floor.

Bed guard, futon bedding and humidifier rentals

Indoor

Bed guards are available to borrow free of charge, but numbers are limited, so please call in advance to inquire. For ages 0 to 2, futon bedding costs an additional 550 yen including tax if needed. Humidifiers can be reserved in advance or borrowed from the front desk at extension 5.

Kids' menu and baby food at the dinner buffet

Indoor

The dinner buffet has a kids' menu and baby food. A microwave for warming baby food you have brought with you is at the entrance to the shop; please use it during the shop's opening hours, and ask at the front desk outside those hours.

Festival-game corner

Indoor
  • calendar_monthSeason:Summer only

A festival-game corner for children is held in summer.

Categories

Overview

Mikazuki Seapark Hotel Katsuura is a large resort hotel in Katsuura, Chiba, with sweeping views of the Pacific Ocean. Rooms include 10-tatami Japanese-style tatami rooms, Japanese-Western rooms combining a tatami area with twin beds, special rooms and VIP suites; the Japanese-Western rooms are about 45 sq m and sleep 1 to 5 guests, and there are also Japanese-Western rooms of about 28 sq m. Meals are a Japanese, Western and Chinese buffet with a kids' menu and baby food. Families can enjoy the Spa Dome Aqua Palace, where you play in swimwear, along with a kids' corner, a baby care room and a nursing room, and bed guards are available to borrow free of charge. There is no family bath or private-hire bath.

Rooms

There are 186 rooms in total, including 28 special rooms and 2 VIP suites, and the rooms face the sea. Some rooms do not have a sea view. The Japanese-Western rooms combine a 6-tatami Japanese-style area with 2 beds across 45 sq m, sleep 1 to 5 guests, and have beds measuring 120 cm by 200 cm. Rakuten Travel also lists a Japanese-Western room of about 28 sq m (a 4.5-tatami Japanese-style area plus 2 beds) for 2 to 4 guests, described as smaller than the other rooms with only a partial sea view. The Japanese-style tatami rooms are 10 tatami mats, about 30 sq m, for 1 to 5 guests. The special rooms are 72 sq m or more for 1 to 6 guests; Nagisa-tei has an 8-tatami Japanese-style area, 2 low beds and a living room, making it a low-bed-style bedroom. The VIP suite Masago-tei is a connecting room with a 15-tatami Japanese-style area, a living room and 2 beds, at 89 sq m plus 46 sq m, while Fugetsu has a 12.5-tatami Japanese-style area, a living room and 2 beds across 113 sq m. Room equipment includes a television, an empty refrigerator, a telephone, an electric kettle, a safety box, a bathtub, a bidet toilet and a hair dryer; humidifiers are available to borrow by advance reservation or from the front desk at extension 5. Board games and card games for playing in your room - the Game of Life, Pop-Up Pirate, Jenga, playing cards, UNO, shogi, go and Othello - are available to borrow free of charge, in limited numbers. The building is not completely barrier-free, and some steps remain in the public areas and in the guest rooms. Wheelchairs are available to borrow, and there are wheelchair-accessible toilets in the building. Parking is in the adjoining multi-level garage, with a vehicle height limit of 2.2 m; taller vehicles are directed by an attendant. Parking is free for the first 24 hours from entry, and 300 yen per hour after that.

Dining

Dinner is a Japanese, Western and Chinese buffet with sushi, sashimi, steak, grilled seafood, tempura and desserts, and there is a kids' menu and baby food. Breakfast is also a buffet, with a seafood rice bowl, dried horse mackerel, freshly baked bread, a salad bar and yogurt. A microwave for warming baby food you have brought with you is at the entrance to the shop and can be used during the shop's opening hours; outside those hours, ask at the front desk.

Baths and Onsen

The panoramic communal bath Hiten no Yu is a sodium chloride and bicarbonate onsen, open from 3 p.m. to midnight and again from 5 a.m. to 9 a.m. The men's bath is on the 12th floor of Masago-tei and the women's bath on the 13th floor; the elevator goes only as far as the 12th floor, so the 13th floor is reached by stairs. If the stairs are difficult for you, you can contact the front desk at extension 5. Children may bathe with a parent of the opposite sex up to age 6, and the same rule applies to the baths inside Aqua Palace. The communal bath has no open-air bath, and there is no family bath or private-hire bath; the outdoor Sky Spa Zone, where you bathe in swimwear, does have two levels of open-air baths. The communal bath is not barrier-free, though some handrails are provided. Whether children who are not yet out of diapers may enter the communal bath tubs is not stated, so please confirm with the hotel in advance.

Play Areas and Pools

The Spa Dome Aqua Palace, where you play in swimwear, has an indoor pool and an outdoor pool; in 2026 the outdoor pool is open from July 7 to September 30. There is no children's pool, so please have an adult accompany children. Children who are not yet out of diapers should wear a swim diaper under their swimsuit and be checked and changed frequently. Swim diapers in M and L sizes are sold at Aqua Palace. The building also has bowling, an arcade corner, table tennis, a comic corner and a karaoke box, and in summer a festival-game corner for children is held. To reach the sea, turn right as you leave the hotel entrance and follow the road down to the shore. The hotel stands along Katsuura Beach, and in summer - July 13 to September 1 in 2026 - a cafe operates at the Katsuura Beach Terrace.

Family-Friendly Features

Children's rates apply to elementary school children and younger; junior high school students and above pay the adult rate. Elementary school children (ages 6 to under 12, with meals and bedding) pay 70% of the adult rate, and preschool-age children (ages 3 to 5, with meals and bedding) pay 50%. Children aged 1 to 2 (no meals, no bedding) pay a facility fee of 3,300 yen including consumption tax, and age 0 is free if no amenities or similar items are needed. For ages 0 to 2, futon bedding costs an additional 550 yen including tax if needed. Children are counted toward the guest number from age 3, so 2 adults, 1 elementary school child and one 3-year-old are charged as 4 guests. Children's rates may be set differently depending on the accommodation plan, and when 1 adult stays with 1 child, the child is charged the same rate as the adult. Bed guards are available to borrow free of charge, but numbers are limited, so please call in advance to inquire. The kids' corner on the 2nd floor of the hotel has coloring sheets, origami and other things for children to enjoy. There is a diaper-changing table inside the 2nd-floor kids' corner, and hot water for formula is available from 8 a.m. to 9 p.m. There is also a private nursing room for women only, and Aqua Palace has a nursing room on the 6th floor. Children's yukata for wearing around the hotel are available at the front desk in sizes S (90-110 cm), M (110-120 cm) and L (120-140 cm); children aged 2 and under booked without meals and without bedding, however, do not receive a yukata. Diapers (M and L sizes) and baby wipes are sold in the vending machines in front of Iso no Ie on the 2nd floor and by the elevator on the 12th floor.

Access & Information

location_onAddress820 Tona, Katsuura, Chiba 299-5225
directions_carAccessA 5-minute walk from Katsuura Station on the JR Sotobo Line. A shuttle is available.
trainNearest stationKatsuura Station
local_parkingParkingParking for 200 cars, free of charge, on a first-come, first-served basis.
callPhone+81-470-73-1111
paymentsCardsVISA, JCB, American Express, Diners Club, UC, DC, NICOS, OMC, Mastercard, Saison, JAL
languageOfficial sitehttps://hmihotelgroup.com/mikazukikatsuura/open_in_new

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From ¥53,106/ per night (2 adults)

Reference price as of September 19, 2026 (stay date 2026-10-10). Please check the booking site for actual rates.

Check rates & availability

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Per night, 2 adults¥53,106+As of September 19, 2026
Book on Booking.com

Frequently Asked Questions

What ages is Mikazuki Seapark Hotel Katsuura 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.

Does Mikazuki Seapark Hotel Katsuura offer baby food?

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Baby food is provided. Age ranges and the restaurants that serve it can change by season, so check the Kids Facilities section on this page and the official site for details.

Is there parking at Mikazuki Seapark Hotel Katsuura?

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Parking: Parking for 200 cars, free of charge, on a first-come, first-served basis.

How do you get to Mikazuki Seapark Hotel Katsuura?

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A 5-minute walk from Katsuura Station on the JR Sotobo Line. A shuttle is available.

Can a child who is not yet out of diapers use the pool?

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Yes, as long as they wear a swim diaper. Put the swim diaper on under the swimsuit and check and change it frequently; swim diapers in M and L sizes are sold at Aqua Palace. There is no children's pool, so an adult must accompany them.

Is there a play area or kids' corner for children?

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There is a kids' corner just for children on the 2nd floor of the hotel, with coloring sheets, origami and other playthings.

Are there yukata for children to wear around the hotel?

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Children's yukata are available at the front desk in sizes S (90-110 cm), M (110-120 cm) and L (120-140 cm). Children aged 2 and under booked without meals and without bedding do not receive one.

Is there a diaper-changing table?

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There is a diaper-changing table inside the kids' corner on the 2nd floor.

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Information on this page was compiled by directly consulting Official website, Rakuten Travel, Jalan (last verified: September 2026). Prices, availability and seasonal operations change. Please check each booking site for the latest information.

We take care to keep information accurate, but always confirm the latest details on the hotel's official site and booking sites before you book or visit.

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