On September 14, 2025, the popular hot spring facility “Ryusenji no Yu in Chigasaki”, Kanagawa Prefecture, was reborn as “Shonan RESORT SPA Ryusenji no Yu.”

　Known as a pioneer of Japan’s super sento (large public bathhouses), the brand is now introducing a brand-new lifestyle-type spa that blends Relaxation × Work × Entertainment.

13 Major Upgrades After Renewal

1.Full Cashless Payments

From admission to dining and shopping, everything can now be settled with a single wristband. No wallet needed—making your stay smoother and more comfortable.

2.Completely Revamped Sauna Area

Men’s Sauna: Features the powerful “14-Bazooka Löyly” system, delivering waves of heat across the entire body.Women’s Sauna: Relax with an automatic löyly infused with herbs and aromatic scents.

3.Regular Heat-Wave Events

Local sauna masters from Shonan Chigasaki host authentic aufguss sessions, offering a true sauna entertainment experience.

4.Upgraded Ganbanyoku (Hot Stone Spa)

A brand-new Korean-style Sweat Lodge Löyly Event has been introduced, promoting deeper sweating and detox benefits.

5.Manga Library with 6,000 Volumes

From popular classics to the latest titles, the expanded comic collection makes for the perfect relaxation break.

6.Semi-Private Co-Working Spaces

Equipped with Wi-Fi and power outlets, these workstations let you balance remote work or study with relaxation.

7.Expanded Outdoor Cooling Area

After the sauna, unwind in a larger, more comfortable outdoor space while enjoying the fresh Shonan breeze.

8.New “Purification Waterfall” Showers

Cool down instantly after your sauna session under a waterfall-like shower stream for ultimate refreshment.

9.Enhanced Cold Baths

With water depth increased by 20 cm and improved quality using natural coral and bamboo charcoal, the baths now offer a skin-friendly, ultra-refreshing experience.

10.Sanitizing Showers for Relaxation Chairs

Dedicated cleaning showers keep the outdoor relaxation chairs fresh and hygienic.

11.Individual Sauna Mats Provided

No need to bring your own—enjoy a more convenient sauna experience.

12.Improved Facilities for Both Men and Women

Subtle adjustments to equipment ensure greater comfort for all guests.

13.Overall Comfort Upgrades

Lighting, layout, and circulation have been optimized to make the facility even more welcoming.

Sauna Lovers’ Paradise: The New Löyly Experience

The highlight of the renewal is without a doubt the dramatically improved sauna facilities:

・Men’s Sauna: 14-Bazooka Löyly Sauna
Featuring 14 high-powered fans that blast heat simultaneously, delivering one of the largest 　　　sauna heat experiences in Shonan.

・Women’s Sauna: Aromatic Auto-Löyly
Surrounded by the scent of herbs and aroma, women can enjoy a deeply relaxing atmosphere.

Local sauna masters also host aufguss events regularly, creating a unique Shonan-style sauna entertainment experience.

Enhanced Cold Bath & Outdoor Relaxation

The essentials of sauna culture—cold bath + outdoor cooling—have also been perfected.

・Cold baths are now 20 cm deeper, with water quality improved using natural coral and bamboo charcoal.

・The outdoor cooling area has been expanded, making it easier to enjoy “totonou” (the post-sauna bliss) while feeling the Shonan sea breeze.

The newly installed “Purification Waterfall” shower provides an instant cool-down after sauna sessions.

6,000 Manga & Semi-Private Workspaces

This facility has evolved beyond a simple hot spring, transforming into a “third place” where guests can spend the entire day.

・Manga Library: 6,000 popular titles for endless reading enjoyment.

・Co-Working Spaces: Semi-private booths equipped with Wi-Fi and power outlets, perfect for remote work or studying.

Now you can work and play at the same time in the Shonan area.

A Brand Backed by Proven Quality

Since its founding in 1989, Ryusenji no Yu has been a pioneer in introducing carbonated baths and ganbanyoku (hot stone spa) to Japan. In 2024, it ranked 4th nationwide overall and 8th in the Ganbanyoku category on the Nifty Onsen Rankings.

With such achievements, the facility’s quality is already guaranteed.

Access & Basic Information

■Business Hours: 5:00 AM – 2:00 AM (last entry 1:30 AM)
■Closed: Open year-round
■Admission Fees
Bathing
・Adults (junior high school & above): ¥750
・Children (elementary school): ¥300
・Infants (4 years & older): ¥100
Ganbanyoku (Hot Stone Spa)
・Junior high school & above: ¥600
(Includes spa wear & large towel)
Morning Bath
・Adults (junior high school & above): ¥650
・Children (elementary school): ¥300
・Infants (4 years & older): ¥100
■Payment Methods: Credit cards accepted; QR code payment, e-money, and IC transit cards available
■Facilities:
・Open-air baths: Yes
・Sauna: Yes (average 85°C)
・Cold bath: Yes (average 16.5°C)
・Outdoor cooling space: Yes
・Towel rental: Available (paid)
・Dining facilities: Yes
・Rest area: Yes
■Links:
・Sauna Ikitai Page: https://sauna-ikitai.com/saunas/4547
・Official Website: Shonan RESORT SPA Ryusenji no Yu Shonan Chigasaki
・Instagram: ryusenjinoyu
・Facebook: Shonan resort spa Ryusenji no yu
■Parking: Free (326 spaces available)
■Access:
・Free shuttle bus from JR Chigasaki Station (North Exit)
・Free shuttle bus from JR Hiratsuka Station (North Exit)
■Address: 1339-1 Nakajima, Chigasaki City, Kanagawa Prefecture

Gallery

■All photos: Official Website of Shonan RESORT SPA Ryusenji no Yu

Conclusion

The newly reopened Shonan RESORT SPA Ryusenji no Yu is more than just a hot spring and sauna. It now offers a lifestyle hub that blends bathing, relaxation, reading, and working.

If you’re looking for a new way to refresh and recharge in the Shonan area, this is the place to be!

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How was it?
This article introduced the major renewal of Shonan RESORT SPA Ryusenji no Yu in Chigasaki, Shonan!

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▼Check out the Japanese version of this article here!
＞＞【茅ヶ崎】スーパー銭湯「湘南RESORTSPA 竜泉寺の湯」がリニューアルオープン！完全キャッシュレス化&サウナ刷新！

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