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Grand Mercure Minamiboso Resort & Spa
forumWhat families say
As a Mikihouse-certified "Welcome Baby" hotel, this Minamiboso resort is well set up for families with children, with 5 play areas, kids' equipment at the communal bath, a summer garden pool with a 40 cm shallow area for kids, and an all-inclusive plan that includes baby food and the buffet. Guests do note waits for the buffet during busy periods, but the renewed play areas and lounge get positive reviews.
Categories
Kids Facilities
Asobiba play area (2nd-floor kids zone, the main of the 5 play areas)
Asobiba play area (2nd-floor kids zone, the main of the 5 play areas)
An indoor kids' space for children under school age aged 2-6. It's divided into a natural wood slide area, an educational play area, a pedal-bike area, and a rest area for accompanying adults. Available for use even before check-in and after checkout.
- checkNatural wood slide
- checkEducational toys
- checkPedal bikes
- checkRest area (table and chairs)
- •For children under school age aged 2-6
- •Open 7 a.m. to 11 p.m.
- •Free for hotel guests
4 more indoor play areas (waiting room / activity plaza / table tennis / go & shogi with nap art)
4 more indoor play areas (waiting room / activity plaza / table tennis / go & shogi with nap art)
Four more play areas beyond the 2nd-floor "Asobiba." 1) 1st-floor waiting room (tatami play area with a soft-drink corner, 1 p.m.-11 p.m.) 2) an activity plaza (ring toss, balls) 3) a table tennis area (7 a.m.-11 p.m.) 4) a go/shogi and nap-art area (board games).
- •Free for hotel guests
- •Soft drinks, alcohol, and snacks served 3 p.m.-6 p.m. (waiting room)
- •Open as a free space 7 p.m.-11 p.m.
- •Table tennis available 7 a.m.-11 p.m.
Garden Pool (oval-shaped, summer only)
Garden Pool (oval-shaped, summer only)
An outdoor garden pool surrounded by the nature of Minamiboso. It's oval-shaped, with an adult area about 105 cm deep and a shallower kids' area about 40 cm deep.
- •Open July 18 (Sat) - September 23 (Wed), 2026
- •Hours 9 a.m. to 5 p.m. (10-minute break every hour)
- •Pool use is included in the room rate (all-inclusive)
- •Day-use visitors cannot use the pool
- •Children not yet toilet-trained may use the pool in swim diapers
- •Elementary-school-age children and younger must be accompanied by a guardian
- •One changing room, shower, lockable locker, spin dryer, and air pump for each of men's and women's areas
Communal bath (open-air onsen, indoor bath, and sauna)
Communal bath (open-air onsen, indoor bath, and sauna)
Only the open-air bath is an onsen; there is also an indoor bath and a sauna. Baby items (baby bath, baby chair, kids' body soap, shampoo hat) are kept on hand.
- •Hours 6 a.m.-10 a.m. (last entry 9:30 a.m.) / 3 p.m.-11 p.m. (last entry 10:30 p.m.)
- •Only the open-air bath is an onsen
- •Baby items on hand: baby bath, baby chair, body soap, shampoo hat
- •Bring your own towel from the room
- •Guests with tattoos may use the bath only if the tattoo can be covered with tattoo-concealing stickers (8 x 10 cm, up to 2).
Kids' rental equipment
Kids' rental equipment
- calendar_monthSeason:2026/7/18~2026/9/23
- paymentsPrice:Free for guests
To lighten your travel luggage, kids' equipment is available for free loan (limited quantities).
- checkBottle-washing set (dedicated detergent and sponge)
- checkBumbo seat
- checkKids' potty seat
- checkStep stool
- checkBaby soap
- checkBaby bath
- checkBed guard
- checkCrib
- checkIn-room wear, size S (110 cm)
- checkIn-room wear, size M (130 cm)
- checkHumidifier
- •Quantities are limited and may not always be available
- •Advance reservation recommended
Kids' dining service
Kids' dining service
The restaurant has a kids' corner, baby food, and kids' equipment. Strollers are welcome in the restaurant.
- checkKids' cutlery and plates
- checkKids' chair
- checkBouncer
- checkBuffet cart
- •Baby food available
- •Strollers welcome in the restaurant
- •A food allergy policy is in place
Overview
Grand Mercure Minamiboso Resort & Spa is an all-inclusive resort in Minamiboso, certified as a "Welcome Baby" hotel by the Mikihouse Child-Rearing Research Institute. It has 5 play areas (a kids zone, a tatami play area, table tennis, ring toss, and a go/shogi and nap-art area), a summer-only oval garden pool (about 105 cm deep with a 40 cm shallow area for kids), and a communal onsen bath with sauna.
About a 10-minute drive from JR Tomiura Station, about 8 minutes from Tomiura IC, and about 10 minutes from the "Biwa Club" highway bus stop (free shuttle bus available with advance reservation, running 9 a.m.-5 p.m. within a set schedule). An all-inclusive resort in Minamiboso with rooms of 36 sq m or more.
Certified as a "Welcome Baby" hotel by the Mikihouse Child-Rearing Research Institute. The all-inclusive rate covers dinner, breakfast, lounge drinks and snacks, the communal bath, and activities.
Play areas and kids' spaces
All 5 play areas are free for hotel guests: 1) "Asobiba" (2nd-floor kids zone - natural wood slide, educational play area, pedal-bike area, rest area; 7 a.m.-11 p.m.) 2) 1st-floor waiting room (tatami play area; 1 p.m.-11 p.m.) 3) an activity plaza (ring toss, balls) 4) a table tennis area (7 a.m.-11 p.m., free) 5) a go/shogi and nap-art area.
Pool
The garden pool is open July 18-September 23, 2026, 9 a.m.-5 p.m. (10-minute break every hour), free for hotel guests (included in the all-inclusive rate). It's oval-shaped, about 105 cm deep, with a shallower kids' area about 40 cm deep. Children not yet toilet-trained can use the pool wearing a swim diaper. Elementary-school-age children and younger must be accompanied by a guardian. There's one changing room, shower, lockable locker, spin dryer, restroom, and air pump for each of the men's and women's areas.
Bath and onsen
The communal bath is an onsen (open-air bath) plus an indoor bath and sauna, open 6 a.m.-10 a.m. / 3 p.m.-11 p.m. Baby items (baby bath, baby chair, kids' body soap, shampoo hat) are kept on hand.
Dining
The restaurant has a kids' corner, baby food, and kids' cutlery/plates/chair/bouncer/buffet cart. Strollers are welcome.
Rental equipment
Rental equipment: bottle-washing set, Bumbo seat, potty seat, step stool, baby soap, baby bath, bed guard, crib, in-room wear (110/130 cm). There is a nursing room (with a diaper pail and water server).
Other
Pets are welcome, and there is an on-site dog run.
Access & Information
| location_onAddress | 1212 Tarara, Tomiura-cho, Minamiboso-shi, Chiba 299-2404 |
|---|---|
| directions_carAccess | About 8 minutes from Tomiura IC. About 10 minutes from JR Tomiura Station. About 10 minutes from the "Biwa Club" highway bus stop. A free shuttle bus is available but requires advance reservation. |
| trainNearest station | Tomiura Station (Chiba) |
| local_parkingParking | Free parking for 150 cars. |
| callPhone | +81-3-5539-2634 |
| paymentsCards | VISA, JCB, American Express, Diners Club, Mastercard |
| languageOfficial site | https://grand-mercure-minamiboso-resortandspa.jp/open_in_new |
Reference price as of August 28, 2026 (stay date 2026-09-19). Please check the booking site for actual rates.
Frequently Asked Questions
What baby equipment is available during the stay?
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Rooms come with baby items such as a microwave, bottle-prep pot, baby soap, baby bath, diaper bin, wet wipes, a bottle-washing set, baby chair, potty seat, step stool, and crib. Bed guards, humidifiers, and strollers can also be borrowed, though quantities are limited, so advance reservation is recommended.
Can babies who aren't toilet-trained use the garden pool?
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The pool's kids' equipment note says children not yet toilet-trained should wear swim diapers, though the official site's description of this point is not entirely clear, so it's worth confirming with the hotel before you book. Elementary-school-age children and younger must be accompanied by a guardian at the pool.
Is there an onsen or communal bath suitable for kids?
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Yes. The communal bath includes an open-air onsen bath, an indoor bath, and a sauna (open 6 a.m.-10 a.m. and 3 p.m.-11 p.m.). Baby items - a baby bath, baby chair, kids' body soap, and a shampoo hat - are kept on hand, and the women's changing area has a baby playpen, diaper-changing table, and crib.
What's included in the all-inclusive rate, and is there food for babies?
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The all-inclusive rate covers dinner, breakfast, buffet restaurant and lounge drinks and snacks, the communal bath, and activities. The restaurant also offers baby food for 5, 7, 9, and 12-month-olds (restaurant service only), plus a kids' corner and kids' tableware and chairs.
How do I get to the hotel from Tomiura Station or the highway bus stop?
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The hotel is about 10 minutes from JR Tomiura Station and about 8 minutes from Tomiura IC. It's also about 10 minutes from the "Biwa Club" highway bus stop, with a free shuttle bus available if you reserve it in advance.
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Information on this page was compiled by directly consulting Official website, Rakuten Travel, Ikyu.com (English), Jalan (last verified: August 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.