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Japan/Things to Do in Hakone, with kids

Hakone Kowakien Yunessun (with kids)

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How Kids-Friendly is Hakone Kowakien Yunessun?

81%Kids-Friendly
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What makes it 81% Kids-Friendly: Children 3-12 pay half price and can play safely in BOXAPPY splash pools, shallow slides, and cave baths, while parents get lockers and lifeguard patrols, although nude area remains off-limits.

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

  • Family-friendly zones: Separate shallow pools and slides designed for ages 3–12 make it easy to keep kids entertained.
  • Complimentary facilities: Free lockers, baby rooms and changing tables handle most family needs without extra cost.

Challenges:

  • No lifeguards: Children swim without lifeguard supervision; parents must watch them closely at all times.
  • Mandatory swim diapers: Kids under 3 must wear swim diapers in all pools; rental is available onsite for ¥550 per pack.
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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 kids?

  1. Multiple themed pools and slides built for ages 3–12.
  2. Fun water attractions from BOXAPPY gym to Dr. Fish foot bath.
  3. Wine, coffee and sake baths add a unique adult twist.
  4. Free baby rooms and child-height facilities simplify family visits.
  5. Indoor and outdoor baths let kids splash while adults relax.

Recommended visit duration: 3-4 hours

Why 3-4 hours visit duration is ideal for with kids: Allows time to enjoy both kid-friendly pools and adult themed baths without rushing.

(View Hakone Kowakien Yunessun on Map)

Kids-Friendly Activities in Hakone Kowakien Yunessun

BOXAPPY Jungle Gym:

Outdoor play pool with slides and water jets for ages 3–10.

Tip: Bring water shoes to avoid slipping and protect little feet.

BOXAPPY Splish-Splash Pool:

Shallow 30 cm indoor pool with small fountains ideal for preschoolers.

Tip: Use swim diapers for young children and pack spare towels.

Flowing Pool Kid’s Slide:

1 m-high slide into a 30 cm-deep loop pool with gentle current.

Tip: Go mid-morning when lines are shorter for quicker turns.

Dragon’s Waterfall:

Warm cascade that gives a gentle water massage.

Tip: Stand slightly back if children are startled by the water flow.

Dr. Fish Foot Bath:

Warm foot bath where tiny fish nibble away dead skin.

Tip: Book at the poolside counter and have a towel ready.

Giant Noodle Cup Photo Spot:

Oversized udon-bowl pool perfect for fun family photos.

Tip: Use a wide-angle setting on your phone for best framing.

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

  1. Buy tickets online: Reserve full-area passports online to skip the ticket line at entry.
  2. Use free lockers: Store valuables and dry clothes near the entrance to travel light in the pools.
  3. Visit on weekdays: Arrive Tuesday–Thursday to avoid peak weekend crowds and get immediate pool access.
🏖️ 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)?

Outdoor open-air baths run from spring through early autumn; they close in deep winter. Visit in mild weather to enjoy mountain views.

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

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Typical Budget for a Family of 4 (2 Adults + 2 Kids)

ItemCost (Approx.)
Adult full-area passport (x2)JPY 3,500
Child full-area passport (x2)JPY 1,750
Total EstimatedJPY 10,500

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 kids)

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$ 13.4
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Average price

US$ 13.4
Promo on Trip.com
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