Forest Massage & Spa Onsen (Thonglor)

I visited this spa in Bangkok for a Onsen and aroma massage twice in the last few days and it was amazing. The therapists were highly skilled and always checked if the pressure was okay, the room was quiet and very clean, and the whole experience felt very well organized. I left feeling relaxed and refreshed, so I can highly recommend this place. 60 minutes in the aroma water bath in the wooden tub is too long for me, but you can also choose a shorter time for the bath.

Wow. 5 stars. Beautiful spa and super kind staff. Booked a 60 minute onsen and aromatherapy massage package and am honestly considering booking another already! The onsen was clean and HOT and I love that there was a fresh watermelon smoothie for me to enjoy during my bath. The massage was outstanding! All my knots are gone! Definitely check this spa out if you're in Thonglo!

The Forest Onsen in Thonglor is an absolute hidden gem! 🌿 From the moment you step in, the atmosphere feels calming, natural, and beautifully designed to transport you away from the city’s hustle. What stood out most to me was the unique signature scents they use — there are two different fragrances in the onsen, both incredibly relaxing and refreshing. The aromas add such a special touch, making the whole experience feel more immersive and luxurious. The facilities are clean, modern, and very well maintained, with a real focus on detail. Whether you’re there to unwind after a long day or treat yourself to some quiet me-time, this place truly delivers a sense of peace and rejuvenation. Highly recommend for anyone in Bangkok looking for a high-quality onsen experience with an extra touch of elegance and sensory delight. 🌸 * They also serve organic watermelon juice without ice and sugar.

I had an amazing experience at Forest, with an aromatherapy massage. Everything was good from start to finish. The massage therapists are professional and very attentive. One of the things I really appreciated was the ability to customize my experience in advance. Before the session, you fill out a form where you could choose the pressure level and specify which areas to focus on or avoid. It makes the whole experience seamless, without having to explain everything during the session. The spa itself is clean, modern, and beautifully maintained. The atmosphere is incredibly relaxing—you start unwinding the moment you step inside. There’s no rush or chaos, just pure tranquility. Highly recommended!

Absolute amazing place! I had a package with one hour private Onsen and 90 minutes aroma massage. Both were great. Highly recommended

What an amazing massage experience we had here at 🌳Forest Thonglor🌳! The ambience was relaxing and the staff were friendly, and most importantly, the massage was right on point! For the office syndrome massage, we got to choose one area to focus on, either the upper or the lower body. I went for the neck & back massage, and it was fantastic! Deep relaxation and stretching 🙆🏻‍♀️. One of the best we’ve tried in the area. Will return to try more.

What a pampering place, professional massage, courteous service, excellent price, a pampering place that looks good, a relaxed atmosphere, a renovated and beautiful place, easy access to get there, if you want to go and pamper yourself in class, this is the place, professionals

Best valued spa in Bangkok, extremely professional therapist attentive to your needs and very friendly. Clean environment and quiet spa room. A small distance from BTS Thong Lo but definitely worth the visit.

I had a 90-minute aromatherapy session. This place offered reasonable prices and great service. What stood out to me the most was how they offered me tea after the session and asked me to sit down and complete a short survey. It was impressive to see that they genuinely cared about feedback and were making a real effort to improve their service.

Very good hidden gem, massage is really good & hard strength. From head to toe. Love the onsen bath & choices of essential oil. Totally a unforgettable relaxing experience in bangkok, will visit again. They do have a off peak discount on the package at 2050baht. For 2.5hrs.