4 Bubble Spa 2018

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, formerly a traditional Turkish bath.

The large reception area and small changing rooms are light and bright; the spa and relaxation areas dimly lit, quietly opulent and Thai-themed. Wafts of musky spa scents greet you as you walk in.

On offer

What's on offer?

Stark black marble floors, wood-panelled walls, and gold Thai trinkets make up the reception area where staff gave us a warm, friendly welcome. We filled out consultation forms in a comfortable corner before 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 your robe and a pair of 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 (no conditioner). The 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.

A small hot wooden sauna would comfortably seat two, while a larger bronze-tiled steam room would seat eight. Both were sufficiently hot and steamy on our visit. Cool off in the black-tiled experience shower or ice fountain afterwards.

Unusually for a spa of this size, Thai Square 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. Help yourself to Thai black tea or crisp green apples.

Thai Square Spa also has a bright and airy manicure and pedicure pod and a Salt House, a specialist treatment room lined with Himalayan salt blocks.

Tell us about the treatments

Tell us about the treatments

We tried the Thai Herbal Healer massage (90 minutes, £130) followed by a Thai Lotus Defense Facial (60 minutes, £85).

My therapist, Tuck, led me to a spacious treatment room, with white chairs and a copper bath behind a large treatment bed.

Tuck invited me to sit on a chair so that she could begin the treatment with a foot cleanse and massage using a sweet almond oil: a relaxing way to start. As Tuck did this, she talked me through the treatment and asked about my areas of concern.

Tuck asked me to strip off completely (a bit of a surprise) and lie face down on the heated bed. She wrapped my hair in a towel and cocooned my body in towels, making sure I was comfortable.

Tuck massaged my body, working her way from the back of each leg to my waist using warm oils and long, sweeping movements. She gently pressed hot poultices onto my skin, blasting wafts of zesty lemon into the air.

Tuck moved on to my back and neck, paying attention to my stiff neck muscles, which seemed to loosen with each stroke. Tuck finished with a divine head massage. The whole treatment left me feeling warm and calm.

For the Thai Lotus Defense Facial, Tuck used Pañpuri products which include organic lotus. She cleansed my face, exfoliated and toned my skin, then applied a face mask which she removed with warm mitts.

Tuck massaged a facial oil into my skin to inject some much-needed moisture before using her fingertips to gently dab on a serum, moisturiser and lip oil. Afterwards, my skin had a healthy, rosy glow which lasted for a couple of days.

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 sat in the relaxation area in our robes and waited for the wooden bento boxes to be delivered to our loungers.

We were delighted to open the lid and find crispy tilapia fish, plain boiled rice, stir-fried vegetables, sweet chilli sauce, three spring rolls, and grapes and orange slices neatly placed into the sections. Everything tasted fresh and delicious.

Help yourself to herbal tea from a large selection or a glass of ice-cold water.

We loved / we didn't love

We loved / we didn't love

We loved

The peace and quiet: Thai Square Spa is a true haven in a busy city; we thoroughly enjoyed being able to relax without the chatter of others.

The striking décor throughout: From the dark, opulent reception to the vibrant reds in the changing room, and from the all-white pillars and loungers in the relaxation space to the metallic mosaic tiles the thermal zone: each area has a different look and feel.

We didn't love

Blankets would be a nice addition in the relaxation area, especially as the robes are rather short.

There were no hand towels or a drier in the toilets; were we supposed to dry our hands on our robes?

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.

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 small but delightful spa is a hidden gem in the heart of busy Westminster, offering luxurious traditional Thai treatments and food.

Super Spy visited in November 2018 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

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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