The Retreat Onsen & Spa

A Japanese-style onsen and spa experience tucked inside the Ashton building on Asok-Din Daeng Road.

4.7(21)Makkasan ARL Station · 8 min walk

Plan your visit

Getting there: Makkasan ARL Station; 8 min walk

Learn Wat Pho First

Wat Pho in Bangkok is the birthplace of traditional Thai massage education. Their on-site massage pavilion offers excellent treatments from students and graduates at reasonable prices — and you know the technique is authentic.

Details

Address: 469/2, 469/4, อาคาร Ashton, Thanon Asok - Din Daeng, Khwaeng Din Daeng, เขตเ, Krung Thep Maha Nakhon 10400, Thailand
Phone: 088 990 6666
Website: www.theretreatspa.com

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Book ahead in Bangkok

Bookable experiences in Bangkok that pair with a visit here.

Thai massage in Bangkok

Most bookings cancel free up to 24 hours ahead

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Why go, and how to do it well

Situated within the Ashton building along the Asok-Din Daeng corridor in Bangkok's Din Daeng district, The Retreat Onsen & Spa offers a Japanese-inspired bathing and wellness experience in the heart of the city. The combination of onsen facilities and spa treatments sets it apart from conventional urban day spas, providing guests with a more immersive approach to relaxation that draws on traditional hot spring bathing culture alongside bodywork and therapeutic services.

Visitors can expect a calm, restorative atmosphere designed to encourage unwinding from Bangkok's fast pace. The onsen element — mineral-infused soaking pools central to the Japanese wellness tradition — is the defining feature here, complementing whatever spa treatments are on offer. The location within a modern residential and mixed-use building gives the facility a boutique, relatively private feel rather than the high-volume atmosphere of a hotel spa chain.

Written by Mac Kiley · Updated Sep 2026

Stay within reach of The Retreat Onsen & Spa

Book ahead in Bangkok

Bookable experiences in Bangkok that pair with a visit here.

Thai massage in Bangkok

Most bookings cancel free up to 24 hours ahead

See prices

Around here, on foot

Well-rated places within a short walk of The Retreat Onsen & Spa, nearest first. Minutes are at an easy pace in the heat.

Experience hints

Pair your visit. After The Retreat Onsen & Spa, round out your day in Bangkok with contrasting stops nearby.

469/2, 469/4, อาคาร Ashton, Thanon Asok - Din Daeng, Khwaeng Din Daeng, เขตเ, Krung Thep Maha Nakhon 10400, Thailand

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More wellness & spas nearby

All within 1.7 km of The Retreat Onsen & Spa.

3 Days in Bangkok

Sense Serene Retreat Spa - Avani Ratchada Bangkok Hotel

110 m walk4.9(425)

1 Thanon Ratchadaphisek, Khwaeng Din Daeng, Khet Din Daeng, Krung Thep Maha Nakhon 10400, Thailand

A hotel spa on Ratchadaphisek Road offering aromatherapy and Thai massage in a calm, upscale setting.

Health Land Spa & Massage (Asoke)

1.7 km away4.2(8,047)

55, Sukhumvit 21 Soi 1, Khwaeng Khlong Toei Nuea, Watthana

Book a day ahead, take the two-hour Thai massage, and let it anchor your Sukhumvit evening.

Oasis Spa Bangkok (Sukhumvit 31)

1.7 km away4.6(2,269)

64 Sukhumvit 31 Yaek 4, Khwaeng Khlong Tan Nuea, Watthana

Down a leafy residential soi off Sukhumvit 31, Oasis Spa is the day-spa experience without the hotel-spa bill, with garden villas around greenery, treatment rooms built for couples, and a menu of multi-hour packages that treat massage as an occasion rather than an errand.

Bangkok Shambhala Meditation Center

1.7 km away5.0(36)

118, 3rd Floor, 79 Soi Sukhumvit 23, Khwaeng Khlong Toei Nuea, Watthana, Krung Thep Maha Nakhon 10110, Thailand

A welcoming urban meditation center in Sukhumvit offering drop-in sessions and beginner courses year-round.

Tips for Visiting Wellness & Spas

Communicate Pressure Preferences

Thai massage can be intense. Say 'bao bao' for lighter pressure or 'nak nak' for harder. A good therapist will check in, but don't hesitate to speak up — suffering in silence defeats the purpose.

Book Longer Sessions

A 60-minute massage is fine, but 90 or 120 minutes allows the therapist to work thoroughly. The price difference is often only 200–400 THB for an extra hour — worth it for a deeper, more relaxing experience.

Try a Herbal Compress

Add a herbal compress (luk pra kob) to your massage — steamed bundles of lemongrass, turmeric, and camphor pressed into sore muscles. It's deeply therapeutic and uniquely Thai. Usually just 200–300 THB extra.

The Retreat Onsen & Spa: Frequently Asked Questions

Is The Retreat Onsen & Spa worth visiting?

The Retreat Onsen & Spa holds a 4.7★ rating from 21 Google reviews, placing it among the highest-rated wellness & spas in Bangkok.

When is the best time to visit The Retreat Onsen & Spa?

The best months to visit Bangkok are November – February, with the most reliable weather. Crowds peak in December & January — going early in the day usually means fewer people. Months to think twice about: April – May (peak heat).

Where is The Retreat Onsen & Spa located?

The Retreat Onsen & Spa is at 469/2, 469/4, อาคาร Ashton, Thanon Asok - Din Daeng, Khwaeng Din Daeng, เขตเ, Krung Thep Maha Nakhon 10400, Thailand, in Bangkok. Getting around Bangkok: BTS Skytrain (most central areas); MRT Metro (underground).

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