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Hakone Hotel Kowakien
forumWhat families say
Families report that Hakone Hotel Kowakien - certified as a 'Welcome Baby' property by the Miki House Child Care Research Institute and awarded the Bronze Prize at the Rakuten Travel Japan's Best Hotel Award 2025 - is an ideal choice for a family's first onsen trip with young children, thanks to its own top-floor communal bath with an open-air bath and panoramic view, seven private-hire baths open to children not yet potty-trained, a summer outdoor pool, and unlimited access during the stay to 'Hakone Kowakien Yunessun' (bathing-suit area plus Mori no Yu).
Categories
Kids Facilities
Hotel Outdoor Pool (summer only)
Hotel Outdoor Pool (summer only)
A 23-meter outdoor pool on the 2nd floor (about 120 cm deep). Next to it is a 'splash pond' fountain area for small children, and a dedicated walkway leads directly from the poolside to FamilyMart.
- •Floats up to 100 cm may be brought in.
- •Bringing a float is recommended for small children.
Hakone Kowakien Yunessun (bathing-suit area)
Hakone Kowakien Yunessun (bathing-suit area)
A hot-spring theme park across the road (about a 5-minute walk). It has plenty of areas where even small children can play safely, including the 'Bozappy no Yu Yu Asobi Hiroba' play area at about 30 cm deep, the mini slide 'Bozappy's Jungle Gym,' and two baby rooms (nursing rooms).
- •Hotel guests get unlimited access during their stay (as many times as you like on the day of and the day after check-in), with occasional closed days.
- •Yunessun is not fully barrier-free - there are steps and stairs inside.
- •Swimwear rental is available, and towels are lent free of charge.
Hakone Kowakien Motoyu Mori no Yu
Hakone Kowakien Motoyu Mori no Yu
A hot-spring facility adjoining Yunessun. Hotel guests have unlimited access.
- •Free for hotel guests, usable as many times as you like on the day of and the day after check-in, with occasional closed days.
Top-floor communal bath with open-air bath and panoramic view
Top-floor communal bath with open-air bath and panoramic view
- calendar_monthSeason:Summer only
- paymentsPrice:Free for guests
A communal bath on the top floor, unusual for Hakone, with sweeping views of the lush green outer rim mountains of Hakone. It has an indoor bath, an open-air bath and a sauna. The water is a sodium chloride spring.
- •Children not yet potty-trained may not use the bathtub.
- •Use the baby bath provided at the communal bath (baby soap is available).
- •The open-air bath can be used in the rain, though it may be closed during severe weather or a thunderstorm warning.
Private-hire baths (7 rooms, one universal-access)
Private-hire baths (7 rooms, one universal-access)
Seven private-hire baths, one of which is universal-access. Children not yet potty-trained may also use the bathtub, and you can relax in a private space of your own.
- •JPY 2,500 (tax included) for 60 minutes, prepaid by credit card.
- •Reserve via the QR code shown in the information section of the in-room TV.
- •You cannot choose the bath type - it is assigned.
- •Bring your own towel from the room and arrive at the 4th-floor front desk 5 minutes before your reserved time.
Playroom (2nd floor)
Playroom (2nd floor)
An indoor playroom with a digital blackboard plus wooden wall toys. A space where hands-on play nurtures curiosity and creativity.
- •60分2,500円（税込）の予約制です
- •クレジットカードでの事前決済となります
Overview
Hakone Hotel Kowakien is a hot-spring resort hotel in Kowakidani, Hakone-machi, Kanagawa Prefecture (operated by Fujita Kanko). It is certified as a 'Welcome Baby' hotel by the Miki House Child Care Research Institute (Standard Room Type-A and Deluxe Room). Guests can enjoy unlimited access during their stay to the hot-spring theme park 'Hakone Kowakien Yunessun' (bathing-suit area plus Motoyu Mori no Yu) across the road from the hotel. The hotel's own facilities include a top-floor communal bath with an open-air bath and panoramic view (children who are not yet potty-trained cannot use the bathtub, though a baby bath is provided), seven private-hire baths (open to children not yet potty-trained), and a summer-only outdoor pool (23 meters long, with a splash pond).
Hakone Hotel Kowakien is a hot-spring resort hotel in Ninotaira, Kowakidani, Hakone-machi, Ashigarashimo-gun, Kanagawa Prefecture, operated by Fujita Kanko Co., Ltd. (awarded the Bronze Prize at the Rakuten Travel Japan's Best Hotel Award 2025). It is immediately on foot from the 'Kowakien' bus stop, and about 10 to 20 minutes by free shuttle bus from Gora Station on the Hakone Tozan Railway.
Welcome Baby certification
The hotel is certified as a 'Welcome Baby' property by the Miki House Child Care Research Institute, with the Standard Room Type-A (30 sq m, up to 4 adults) and the Deluxe Room (50 sq m, up to 6 adults) as the certified room types. Both are designed for a shoes-off lifestyle, so they are reassuring even for crawling-age babies.
Onsen
- Top-floor communal bath with open-air bath and panoramic view: indoor bath, open-air bath and sauna. Open 5 a.m.-10 a.m. and 3 p.m.-midnight (last entry 11:30 p.m.). The water is a sodium chloride spring. Note: children who are not yet potty-trained may not use the bathtub; a baby bath is provided at the communal bath.
- Private-hire baths (7 rooms, one of which is universal-access): open 4 p.m.-midnight (last reservation 11 p.m.) and 6 a.m.-8 a.m., JPY 2,500 (tax included) for 60 minutes, prepaid by credit card. Children not yet potty-trained may also use the bathtub here. Reserve via the QR code shown on the in-room TV (you cannot choose the bath type).
Pool and Yunessun
- Hotel outdoor pool (2nd floor): summer only, 9 a.m.-5 p.m., 23 meters long, about 120 cm deep, with a 'splash pond' fountain area next to it; floats up to 100 cm are allowed.
- 'Hakone Kowakien Yunessun': across the road (about a 5-minute walk); hotel guests get unlimited access during their stay (bathing-suit area plus Mori no Yu, usable as many times as you like on the day of and the day after check-in, with occasional closed days). It includes the 'Bozappy no Yu Yu Asobi Hiroba' play area for small children (about 30 cm deep) and the mini slide 'Bozappy's Jungle Gym'.
Facilities and services for children
- 1st floor: nursing room with a hot-water dispenser for formula (7 a.m.-9 p.m., with a crib, diaper changing available)
- 2nd floor: playroom (7 a.m.-8 p.m., with a digital blackboard and wooden wall toys)
- 4th floor: amenity vending machine (24 hours, diapers, formula, etc.)
- An adjacent FamilyMart convenience store (7 a.m.-11 p.m.)
Children's amenities and rental items
Children's samue loungewear (100/120/140 cm), a children's toilet seat, a step stool, a bed guard, baby soap and shampoo, a baby bath, a crib (JPY 3,300 per unit, free with the Welcome Baby plan), a thermometer, a baby bottle sterilizer, and a diaper trash bin.
Dining
The buffet restaurant 'Fontainebleau' (1st floor) offers free-flow drinks, including alcohol, at both dinner and breakfast, baby food for ages 5 months and up, and kids' chairs, baby chairs, children's tableware and paper bibs. Because it is a buffet, the restaurant cannot accommodate food allergies - please check the ingredient labels. Bringing your own baby food, and having it warmed, is allowed.
Other
All rooms are non-smoking, and pets are not allowed. The 'Bozappy Room' (limited to one room per day, a themed room themed on the Yunessun mascot 'Hakoneko Bozappy') is also available. Other facilities include Sanatio Spa (6th floor, using SPA CEYLON and HARNN products), Bar1959 (4th floor, 4 p.m.-midnight), a coin laundry (2nd floor, 8 a.m.-10 p.m.), and the hotel is fully cashless. Late checkout is available until 12 p.m.
Access & Information
| location_onAddress | 1297 Ninotaira, Hakone-machi, Ashigarashimo-gun, Kanagawa 250-0407 |
|---|---|
| directions_carAccess | Immediately on foot from the 'Kowakien' bus stop; a shuttle bus is also available from Gora Station on the Hakone Tozan Railway. |
| trainNearest station | Gora Station (Hakone Tozan Railway) |
| local_parkingParking | Available, 150 spaces, free, no reservation required. |
| callPhone | +81-465225489 |
| paymentsCards | VISA, JCB, American Express, Diners Club, UC |
| languageOfficial site | https://www.hakone-hotelkowakien.jp/open_in_new |
Reference price as of August 25, 2026 (stay date 2026-09-19). Please check the booking site for actual rates.
Frequently Asked Questions
Can babies use the communal bath at Hakone Hotel Kowakien?
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Not directly in the bathtub - children who are not yet potty-trained may not use the bathtub at the top-floor communal bath, though a baby bath is provided there for them. The hotel's seven private-hire baths have no such restriction, so children not yet potty-trained can bathe in those tubs with their family.
Is the hotel certified as baby-friendly?
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Yes. Hakone Hotel Kowakien is certified as a 'Welcome Baby' property by the Miki House Child Care Research Institute, with the Standard Room Type-A (30 sq m) and Deluxe Room (50 sq m) as the certified room types, both designed for a shoes-off lifestyle.
Can we use Hakone Kowakien Yunessun for free during our stay?
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Yes. Hotel guests get unlimited access during their stay to Hakone Kowakien Yunessun across the road (about a 5-minute walk), covering both the bathing-suit area and Motoyu Mori no Yu, usable as many times as you like on the day of and the day after check-in (there are occasional closed days).
Is there a pool for kids, and how deep is it?
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The hotel's own outdoor pool (2nd floor, summer only) is 23 meters long and about 120 cm deep, with floats up to 100 cm allowed and a shallow 'splash pond' fountain area next to it for small children. Yunessun also has the 'Bozappy no Yu Yu Asobi Hiroba' play area at about 30 cm deep.
What baby gear and dining options are available for young children?
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The hotel provides a crib (JPY 3,300 per unit, free with the Welcome Baby plan), a baby bath, a bed guard, a children's toilet seat, a step stool, baby soap and shampoo, a thermometer, and a bottle sterilizer, plus a nursing room with a hot-water dispenser for formula. The buffet restaurant Fontainebleau serves baby food for ages 5 months and up and provides kids' chairs, baby chairs, children's tableware and paper bibs; bringing your own baby food and having it warmed is also allowed, though allergy accommodation is not possible because of the buffet format.
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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.