Let’s Relax Onsen and Spa (Thonglor)
spa
The experience
Area: Thonglor.
Highlights
Location & contact
- 300 Soi Thong Lo, Khwaeng Khlong Tan Nuea, Watthana, Krung Thep Maha Nakhon 10110, Thailand
Google reviews
Based on 2,099 Google ratings
Rei Perucho
3 months agoHad the most amazing 4 hours of massage and onsen at this spa! Highly recommend! 💯 Upon entering, you will be greated with warm welcome from the staff and will be assisted every step of the way. The entire place is kept clean and organised and the onsen is perfect for those looking to relax after a whole day or week of touring Bangkok! The massages are outstanding! Thai massage is already amazing but the staff of Let’s Relax truly elevate it further. I will definitely come back again! Also, they provide complimentary snacks and drinks in the lounge and a serving of Mango Sticky rice after your massage. Truly a wonderful service!
Olga Starodubtseva
a month agoSuch a wonderful experience at Let’s Relax Onsen spa! So grateful for recommendation of my friends to come check this place out was one of the highlights of my trip in Bangkok. Highly recommend to visit! I loved the sauna, steamrooms and the silk bath experience 😍 as well as the massage.
Darwis Sunaryo
7 months agoI do not understand why oil massage is double the price of a normal thai massage. I have had massaged in indonesia, singapore, malaysia and thailand. All the placed i went to will ask/inform if they have prepared a male massue and if i was okay with it. I respect all massues and have no issues with any gender. But everyone has their own preferences and comfortability, it was very weird to me that i got a male massue without being informed?! Apologies but what made it worse was that he had wet palm. I could feel the dampness of his hands when he was massaging my feet, its like urgh! No offence. Booked the thai massage + hot compress. Horribly baffled that the hot compress was done over the shirt - which means that i am not getting the full benefits of the herbs that were compressed onto me. And when he was compressing it onto my butt, i can feel my undergarments getting wet. I felt kinda ew! Lets relax spa is supposed to have a higher quality of massges, but…
A. Kaneshiro
a year agoI am an onsen lover. I have been visiting Let's Relax Onsen whenever I am in Bangkok for work before meeting my clients in the afternoon. I like going there at 10 am, when they have just opened for the day and there aren’t many customers. I usually soak in the onsen for an hour before heading for my 2hrs Thai massage. The ambience of the massage room is quiet, peaceful and smell nice and the massage is very good. There are five pools at the onsen with different temperatures, along with a sauna and a steam room. The shower area has 16 seated showers and four standing shower stalls. The locker area is spacious, with a separate dressing area. There’s also a room with warm Himalayan hot stone bed baths and a cool-down room. A relaxing lounge is available if you’d like to take a nap. The staff are friendly and helpful. They serve delicious mango sticky rice and tea after the massage. Your body and mind will definitely feel rejuvenated, refreshed, and relaxed. The onsen is usually not crowded in the early morning. Avoid the early afternoon and late evening as it tends to be crowded.
Soozhee Pearce
9 months ago🌿 Let’s Relax Thonglor Onsen – A Daily Sanctuary of Peace in the Heart of Bangkok As an avid onsen enthusiast, my husband surprised me with a Toshi Pass—a 1-year membership that grants daily access (1 entry per day) to this premium Japanese-style onsen, along with a 20% discount on all massage services. Your guest will get a discount for a daily pass if they come with you. For someone who enjoys the mental and physical reset of a daily soak, the value has been exceptional. Though the pass was originally purchased at the Lumphini branch, I now exclusively visit the Thonglor location—and it’s not just because of convenience. The magic of this branch lies in the presence of the incredible Boss Lady Kuhn Nui, whose warm, heartfelt welcome to every guest sets the tone for the entire experience. Her consistent 5-star hospitality and leadership radiate through the entire team, and it’s clear that staff pride themselves on upholding these high standards. 🛎️ Staff & Service: Subtle Excellence Everywhere After visiting nearly every day, I’ve come to know who truly shines: • Ball at the front desk is wonderfully attentive, always making sure my bookings and VIP discounts are handled smoothly and correctly. • Every staff member—whether they manage your shoes, offer you towels, serve your meals at the cafe or clean the change rooms—works with quiet integrity and visible pride. Their attention to detail contributes to the peace of the whole space. • While there are occasional staff at reception who seem oddly quick to say “sorry, fully booked” with inappropriate glee, the higher-performing team members stand out even more by their willingness to help and accommodate returning members with grace and effort. 💧 The Onsen Experience: Zen Meets Luxury Nestled on the 5th floor of the 5-star Grande Centre Point Hotel Thonglor, this onsen is an elegant fusion of Japanese zen and Roman-bath peace; immaculately clean, and thoughtfully designed. Upon check-in, you’re given a numbered locker key, kimono-style top and pants, and a small bag with large and small towels. You’re then guided to swap your shoes for slippers, setting the tone for an unhurried ritual of release. Facilities include: • 🌿 Outdoor Area: Beautiful massage jet pools (both standing and seated), with fresh air and light • 🛁 Indoor Baths: A creamy “milk bath,” a steaming hot bath, and a cold plunge • 🌫️ Steam Room & Sauna: Perfect for rotation rituals to deeply detox and recharge • ❄️ Heated + Cold Rooms: Sweat it out on warm floors, then cool down next door • 🍹 Complimentary refreshment stations: Pandan water, lemon water, and coconut crisps await post-soak Men’s and women’s onsen areas are completely separate, maintaining comfort and cultural respect. 🍵 Massages, Meals & Mango Sticky Rice The onsen’s full kitchen offers a range of quality meals: fresh juices, ramen, sandwiches, cakes, teas, and excellent coffee. One unexpected delight: a complimentary serving of mango sticky rice is included when you book full-body or 1-hour massages. On one of my visits, I booked three massages throughout the day—yes, I enjoyed three servings of mango sticky rice. No complaints. 🧘♀️ Work, Rest or Recalibrate This onsen isn’t just for soaking—it’s a calm sanctuary where you can bring your laptop and work peacefully or relax in dedicated quiet rooms: • Tatami mat areas with low lounge beds for a nap or soft reading time • Heated floor zones to deeply relax or sweat gently in stillness It’s perfect for a full-day wellness reset. Highly recommend.

