
An onsen like no other in the Tokyo area’s premier hot spring resort town.
With February here, it’s easy to get lulled into a false sense of security regarding the weather in Japan. After all, in just a month the cherry blossoms are scheduled to start blooming in Tokyo, and aren’t those outdoor sakura hanami parties the archetypal moment of spring?
Old Man Winter (or the Winter Shogun, as he’s called in Japan) is going to be hitting Japan with cold temperatures for a few more weeks, however, and so it’s still a great time to head to a hot spring to warm yourself up. And if you’re having trouble picking which hot spring to go to, right now is an especially good time to visit Yunessun in the onsen town of Hakone and take a dip in its chocolate bath.
The chocolate bath isn’t a permanent part of Yunessun, but the facility is offering it as a special service for the Valentine’s Day season, since the celebration is at least as much about chocolate as it is romance in Japan. Twice a day, at 1 and 3 p.m., the Yunessan staff pours a full liter (33.8 ounces) of chocolate into the tub, with the heat of the bathwater releasing a sweet aroma that the resort says will soak into your pores and leave your skin with a sweet scent.
In addition to the aroma and novelty, the chocolate bath also comes with a variety of purported health and beauty benefits, as Yunessan says the moisturizing and circulation-improving effects found in cocoa will be transferred to guests via their time in the choco-filled tub.
While most hot springs in Japan require bathers to be nude, Yunessun allows, and actually requires, bathing suits for this unique experience, which is also a mixed-gender affair (mirroring the setup of its maple syrup bath from a while back). The chocolate bath will be open until March 17, meaning guests can celebrate with a soak to celebrate not only Valentine’s Day, but its Japanese counterpart White Day as well.
Related: Yunessun official website
Source: Yunessun press release
Top image: Yunessun press release
Insert images: Yunessun press release, Yunessun
[ Read in Japanese ]
Follow Casey on Twitter for more reasons Kanagawa is awesome.




Blood-red Evangelion hot spring bath to open in Japan for fun, relaxing terror
Japanese hot spring adds roaring Godzilla Invasion Cave, other kaiju-related relaxation options
Meat Festival at Yunessun hot spring resort features creamy soy milk bath!
The Ring’s Sadako haunts one of Japan’s favorite hot springs for Halloween
Five of Japan’s most unique snow-covered hot spring bathing sites
When will the cherry blossoms reach full bloom in Japan this year?[Forecast]
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
Cherry blossoms begin blooming in Japan with record-early starts for sakura season
Universal Studios’ Sailor Moon theme park attraction is finally coming to America
Studio Ghibli director Hayao Miyazaki releases new artworks, still wants to make movies
Japanese man drives truck that’s on fire directly to fire station, drops flaming potatoes[Videos]
Paired Sailor Moon bracelets are femininely eye-catching and represent all 10 Sailor Senshi
We tried a Japanese egg steamer to achieve the perfect breakfast eggs without a stove
Umamusume food and drinks dash into real world at Family Mart convenience stores[Taste test]
Train station platform ramen store closes its doors on half a century of history in Tokyo
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Studio Ghibli adds new Mother’s Day gift sets to its anime collection in Japan
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Virtual idol Hatsune Miku redesigned with look that adds new elements and brings back old ones
The next time you’re feeling stressed out, you could relax on a Pokémon Psyduck chair from Japan
Komachi Shokudo: Japanese mum’s-style cooking for breakfast, lunch and dinner in Tokyo
The top 10 graduation songs in Japan as chosen by current Japanese high school students
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Take the “Public” Out of Public Bathing and Make a Natural Hot Spring in the Comfort of Your Own Home
You can make your own hot spring bath at this river in central Japan【Japan travel】
Capybara hot springs are back: Rodent-friendly onsen now available all over Japan
Hyotan Onsen – Japan’s only hot spring with three Michelin stars
Eight unforgettable hot springs, as recommended by Japan’s “Professor Bath”
The 10 best Japanese hot spring resorts locals want to go back to again and again
Bathe with Japan’s famous hot spring monkeys in the comfort of your home with these tub stickers
Onsen in Japan uses the same mysterious hot spring bathing system from Ghibli film Spirited Away
How old is too old for a boy to go into the women’s hot spring bath in Japan?
Japanese government encouraging hot springs to ease tattoo restrictions
Saying a prayer can open a passage between men’s and women’s baths at this Japanese hot spring
Hot Spring Lovers Rejoice! Three Unique Onsen Resorts to Try Before You Die
Tokyo hot spring allows guests with tattoos to bathe… with some very odd restrictions
English hot spring manners poster is so thorough, even Japanese people are learning from it
Creating an open-air hot spring bath (without a hot spring) at our cheap Japanese country house【Vids】
Ibaraki Prefecture promotes onsen hot springs with muscly man bathing in 4K【Videos】