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Japan/Things to Do in Hakone, with baby

Hakone Kowakien Yunessun (with baby)

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How Baby-Friendly is Hakone Kowakien Yunessun?

74%Baby-Friendly
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What makes it 74% Baby-Friendly: Babies enter free, swim diapers sold, nursing rooms, diaper tables and stroller access exist, but no lifeguard or baby-only warm pool means parents must hold infants constantly.

Google
Reviews3.8/ 5
(from 5,055 reviews)
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Positives:

  • Free entry for babies: Children under 3 enter Yunessun for free.
  • On-site baby care: Two Baby Rooms with facilities are on the 5th floor of the swimwear area.

Challenges:

  • No lifeguard supervision: Pools have no lifeguard; hold your baby securely at all times.
  • Limited baby-only areas: No dedicated baby spa; avoid slides and deep-current pools for infants.
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🏖️ Explore Hakone Kowakien Yunessun with a local guide: GetYourGuide's 10 BEST Activities and Tours around Hakone Kowakien Yunessun. Local guides know the hidden gems you'd otherwise miss, read what other travelers experienced, and book easily.

What is Hakone Kowakien Yunessun?

  • A comprehensive hot spring resort and water park complex in Hakone that blends traditional Japanese onsen with themed spa and aquatic attractions
  • Distinct two-zone layout: YUNESSUN swimwear area with over 60 themed baths—from ancient Roman and Dead Sea varieties to wine, coffee and sake-infused pools—and MORI NO YU nude onsen section offering 32 classic indoor and open-air baths
  • Nestled in the historic Kowakudani valley, the facility integrates indoor pools, saunas and open-air springs within the region’s volcanic hot spring landscape

What is so special about Hakone Kowakien Yunessun for with baby?

  1. Free admission for children under 3
  2. 30 cm Splish-Splash Pool perfect for babies
  3. Dedicated Baby Rooms with nursing and changing facilities
  4. Free large lockers for baby gear
  5. Quiet tatami lounge for resting with your baby

Recommended visit duration: 3-4 hours

Why 3-4 hours visit duration is ideal for with baby: This is enough time to enjoy pools, use baby facilities, and rest without rushing.

(View Hakone Kowakien Yunessun on Map)

Baby-Friendly Activities in Hakone Kowakien Yunessun

BOXAPPY’s Splish-Splash Pool:

Shallow 30 cm pool with gentle fountains and jets perfect for holding your baby.

Tip: Hold your baby at waist level and ensure they wear swim diapers.

Baby Rooms (授乳室):

Private rooms with nursing chairs, changing tables, microwave and hot water dispenser.

Tip: Use the microwave to warm bottles and schedule visits between bath sessions.

Relaxation Room (Tatami Lounge):

Quiet tatami area with mountain views for resting and feeding your baby.

Tip: Visit early to secure a spot during peak hours midday.

Free Lockers:

Large lockers (42×82×41 cm) to store diapers, strollers, and baby gear at no cost.

Tip: Reserve a locker near the entrance for easy access to supplies.

How to Make the Most of Your Visit to Hakone Kowakien Yunessun

  1. Visit weekdays: Go Monday to Thursday to avoid crowds and secure baby rooms easily.
  2. Pre-book stroller drop-off: Drop stroller at front desk to skip disinfecting and save indoor space.
  3. Buy swim diapers in advance: Bring your own or buy at the rental corner to avoid last-minute queues.
🏖️ Tour Hakone Kowakien Yunessun like a local: GetYourGuide's Top 10 Activities and Tours in Hakone Kowakien Yunessun. Local experts uncover hidden treasures you'd never find alone, browse authentic traveler reviews, and book your perfect adventure hassle-free.

Reviews of Hakone Kowakien Yunessun

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M K

M K

Aug 2025

Gross! We visited the swimsuit pool area as visitors, did not stay at the hotel. It was crammed full of people. Some surfaces were slippery and almost all areas except the rest area upstairs were not clean. Locker rooms were slimy and dirty. If youre from the U.S. and know Great Wolf Lodge, it was like that but worse. The staff at the front were very nice, that was about the only good thing abou...

Jonathan Dudley

Jonathan Dudley

Aug 2025

We came to the water park. It was hideous. For children they can run around and have a good time. It is not for adults at all. So busy and tacky. Not relaxing at all..I did come on a weekend. The staff were very helpful but unless you have small kids don't bother.

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?

Jul 2025

The floor was wet (obviously) but we all had to go with bare feet.. making me worry all the time about getting foot bacteria that would make them fall off or grow fungus. Please let me just wear slippers it's not that big of a deal. It wouldn't be IF it wasn't so damn crowded. Can't even lay down in the pools because there is someone next to you and most of the pools were unenterable because of t...

Tammy Wong

Tammy Wong

May 2025

Our family of 4 rented a car just to come here for a day. Place was spacious, plenty of lockers and different themed warm pools. Price is relatively cheap. Outside onsen with the view was closed for maintenance which was disappointing. We did the fish nibbling your feet which was fun. Place desperately needed an upgrade though. Everything is so run down, the bottom of the outside cave pool w...

Sarah Thomas

Sarah Thomas

Apr 2025

We went to the water park- booked tickets online for the afternoon slot and rented towels for ¥250 each. Was very easy to fill many hours here. Lots of different novelty onsens to get in, the water everywhere was lovely and hot and even around the pool areas was really warm too, makes a change from uk public pools! You can tell it’s older but it still felt clean enough and plenty of lifeguards. Yo...

When is the best time to visit Hakone Kowakien Yunessun (Hakone, Japan)?

Open-air baths close in deep winter. Visit spring to autumn for outdoor pools. Expect higher crowds on weekends and Japanese holidays.

✈️ Ready to go? Check the latest flight deals to Hakone on Trip.com

Explore These Activities

Typical Budget for a Family of 3 (2 Adults + 1 Baby)

ItemCost (Approx.)
Swimwear-area admission (2 adults)JPY 5,000
Stroller storage at front deskJPY 200
Swim diaper pack (3 pieces)JPY 550
Baby swimwear rentalJPY 770
Towel rentals (bath & face)JPY 400
Total EstimatedJPY 6,920

Note: All prices are indicative and may vary. Please check directly with the venue for the most accurate and up-to-date information.

Content Notice: This content combines editorial expertise with AI assistance to ensure comprehensive and up-to-date information. Our team regularly curates and reviews all content for accuracy and relevance. Help Us Improve

Map of Hakone Kowakien Yunessun

Address: 1297 Ninotaira, Hakone, Ashigarashimo District, Kanagawa 250-0407, Japan

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Looking for other Things to Do besides Hakone Kowakien Yunessun (Hakone)?

← See other Things to Do in Hakone (with baby)

About Hakone Kowakien Yunessun

Opening Hours

Monday:10:00 AM – 7:00 PM
Tuesday:10:00 AM – 7:00 PM
Wednesday:10:00 AM – 7:00 PM
Thursday:10:00 AM – 7:00 PM
Friday:9:00 AM – 7:00 PM
Saturday:9:00 AM – 7:00 PM
Sunday:9:00 AM – 7:00 PM

Hours may vary during holidays, special events, and peak seasons. Please check the official website for the most up-to-date information.

Website

Official Website

Phone Number

+81 460-82-4126

Average price

US$ 14.27
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Average price

US$ 14.27
Promo on Trip.com
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