4 Bubble Spa 2017

Thai Square Spa

Thai Square Spa is a luxurious day spa that offers a genuine Thai experience in the heart of Westminster. You will find a fabulous range of exotic Thai treatments performed by attentive, expertly trained Thai therapists in ornate surroundings. There’s a sauna, Jacuzzi, Himalayan salt room, rasul and post-treatment relaxation area. Our Golden Maharani Facial was absolutely divine – we walked out of the treatment room with clear and glowing skin.



  • XXL robes available
  • Jacuzzi
  • Sauna
  • Himalayan salt room
  • Mosaic steam rasul suite
  • Relaxation area
  • Beauty bar
  • Spa shop


  • iMantara

Our Spa Spy review

First impressions

First Impressions

Thai Square Spa is a subterranean day spa a short walk from the tourist heart of London's Westminster. Leave the noise and stress behind as you enter the grand Georgian building. The large reception area and small changing rooms are light and bright; the spa and relaxation areas are dimly lit, quietly opulent and Thai-themed.

On offer

What's on offer?

Stark black marble floors, wood-panelled walls, and gold Thai trinkets make up the reception area where we received a warm, friendly welcome. We filled out consultation forms in a comfortable corner before being going through to the changing facilities.

What the small red-tiled changing room lacks in size, it makes up for in style. Banks of smart black lockers contain robes and black branded flip-flops. Change beside a small cushioned bench. The central vanity station contains two sinks with hand wash and lotion, a large mirror, and a hairdryer. Frosted doors open to reveal two private shower cubicles with giant square shower heads and iMantara shampoo and body wash. Loos are a little further down the mirrored corridor.

Tiny Buddha statues holding candles greet you as you walk down the stairs. Wander through two of the relaxation areas to the shimmering bronze and gold thermal area where the star of the spa awaits: a gold-tiled bubbly Jacuzzi seating up to eight. We struggled to drag ourselves out.

There's a small hot wooden sauna which would comfortably seat two and a larger bronze-tiled steam room that would seat eight. Both were sufficiently hot and steamy on our visit. Cool off in the black-tiled experience shower afterwards.

Unusually for a spa of this size, Thai Spa offers three spaces to relax: a livelier area that also doubles as the lunch venue; a dimly-lit room with exposed white brick walls, Grecian style pillars and bright paintings; and a darker, post-treatment room with flickering candles and flowing cream curtains.

Thai Square Spa also has a bright and airy manicure and pedicure pod.

Tell us about the treatments

Tell us about the treatments

We tried the Golden Maharani facial treatment (90 minutes; £150).

My therapist, Ta, met me in the pre-treatment relaxation area and showed me to a low-lit treatment room where classical music was playing in the background. I took a seat on a white chair and relaxed as Ta washed my feet while talking me through the treatment.

I lay face up on the treatment bed which was draped in soft cotton sheets. Ta wrapped my hair in a towel and made sure I was cosy and comfortable before beginning my facial. This began with a double cleanse: a thick and floral-scented cream cleanser followed by a second light and refreshing foam cleanser. Ta then dotted a jasmine-based exfoliator on my skin before lightly massaging it in with a circular motion. Once this was removed, Ta examined my skin and spritzed me with a cooling and refreshing minty toner.

Ta warmed the thick oil that came next, and applied it to my face, shoulders and décolletage. Ta encouraged it to seep it in using a combination of short and long strokes. I loved the Thai herbal compress that Ta pressed onto certain points of my skin, making me want to drift off.

Ta used lavender-scented steamed flannels to open my pores in preparation for the star of the show: a golden collagen mask. As soon as the thick, creamy liquid went onto my skin, it began to tingle. After a relaxing head, arm and hand massage, Ta left the mask to dry (and me to drift off). As soon as Ta peeled off the mask, I could tell that my skin was tauter. A quick spritz of a refreshing toner and a generous amount of serum and face cream, and I was ready for my close-up.

My skin felt plumper, firmer and hydrated, as if someone had pressed a reset button and reverted my skin to a "normal" setting (not stressed, polluted or sleep deprived). My complexion was clear and glowing.

Thai Square Spa offers a huge range of traditional Thai facial and body treatments using their own brand iMantara. These sit alongside bathing rituals, various massages, and manicures and pedicures. There are also specific treatments for men and mums-to-be.

Food facts

Food Facts

Lunch is included in some spa packages. You need to order your Thai-style bento boxes in advance, meaning that vegetarians and those with dietary requirements are easily catered for.

We remained in our robes in the spa's bright relaxation area and enjoyed a vegetable green curry with sticky jasmine rice, sweet chilli sauce and crunchy stir-fry vegetables. The food was light and fragrant, with just the right amount of spice. Dessert is always a selection of fresh fruit; our sweet and juicy orange slices were a refreshing contrast to the heat of the curry.

Help yourself to herbal teas and ice-cold water.  

We loved / we didn't love

We loved / we didn't love

We loved

The top-notch Thai treatments: The wide ranging menu will keep even the most seasoned spa-goers happy.

The tranquil and exclusive atmosphere: We felt a world away from the capital's chaos outside.

The golden Jacuzzi: We could have bubbled away in this wonderful space for hours (or at least until our fingers were wrinkly).

We didn't love

The absence of amenities: Body lotion, conditioner and swimsuit bags would be a welcome addition to the changing rooms.

As is common for a London-based spa, Thai Square Spa doesn't have a pool; however, the Jacuzzi allows you to wallow in warm water.

Who do you think would like it?

Who do you think would like it?

Stressed-out city-slickers: Thai Square Spa is open from 9am to 9pm, making it a great place to come for a lunchtime treat or an after-work treatment.

Single spa-goers would feel at ease; we were one of a few on our visit.

Thai Square Spa would also be a good choice for couples and small groups of friends: There are plenty of cosy spaces to have a quiet catch up, or upgrade to the private suite for a special occasion.

It goes without saying that those who love Thai treatments will adore Thai Square.

What bubble rating did you give this spa?

What bubble rating did you give this spa?

We awarded Thai Square Spa a Good Spa Guide Bubble Rating of 4 bubbles. This tranquil oasis is a wonderful escape from the bustling city. The customer service is good and the Thai treatments are top-notch.

Scarlet Spy visited in September 2017 and awarded it 4 Bubbles.

Public Opinion

This spa is...

What others are saying

"I went to Thai Square Spa today with my friend for our 30th Birthdays. The first impressions of the spa is that it is very well decorated, beautiful and relaxing. The changing room is a very small public changing room with two reasonable sized showers. We had booked "Sen Space" for an hour before our treatments which I wouldn't recommend : sen space consists of a salt room (deck chairs in a bed of salt... We couldn't quite work out why), a small sauna, cold jacuzzi (too cold to go in) and a steam room which didn't smell very pleasant. The main relaxation area was absolutely lovely though, so when we complained about sen space the professional and friendly staff provided a refund (vouchers) without question. For treatments, I opted for a half day "essence" package which consisted of a lovely foot bath, full body exfoliating rub, then I was wrapped in a heated towel and left to relax on the spacious bed for ten minutes (this was additional). I had a shower which unfortunately wasn't very warm, and my friend had the same complaint about the temperature of her shower. Next I had a full body massage with beautiful smelling oils. The massage was firm but left me feeling very relaxed. Then I had a facial which cleaned my face and then massaged gently, followed by a mask to rejuvenate. I finished feeling very relaxed and well looked after. I would give this five stars if the small points such as water temperature, small changing room and cost of sen space were fixed. "

Lauren Cini

  • April 16, 2016 at 5:38 pm

Voted: Solo Friendly

Spa Location

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Spa location

Northumberland Avenue,

020 7839 7990

Visit the spa's website

Extra Information


Spa cuisine included in spa-day packages.

Opening Hours

Monday to Saturday: 9 am - 9 pm
Sunday: 11am - 7pm

Treatment menu

View the treatment menu

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