Third Space

Guests enjoy complimentary access to on-site Third Space, one of London’s premium members-only health clubs with up-to-the-day equipment, expert fitness professionals and a wonderful menu of health and beauty treatments.

Rare in Central London, The Marylebone has an 18m swimming pool. Children between the ages of 5 and 17 years are able to access the swimming pool if accompanied by a responsible adult between 10am – 12pm and 3.30pm and 5.30 pm Monday - Sunday. Children under the age of 5 are not allowed to use the swimming pool.

Gym & Health Club

State-of-the-art equipment and highly specialised personal training are the hallmarks of Third Space. Its Retro Gym is complete with climbing ropes, gymnastic rings, beams, bars, and stairs. Weight machines, spin area, dedicated free weights studio, stretch area and Powerplate Zone.

Residents under 18 years of age are not permitted to use the gym.


Hotel guests are welcome to join complimentary fitness classes which range from cardio to combat, conditioning, cycling, dance, Pilates and Yoga.

Opening Times

Monday to Friday: 6:30am – 11pm (last entry 10pm, pool closes 10:30pm)
Saturday & Sunday: 8am – 8pm (pool closes 7:30pm)

Christmas Opening Hours

Monday 21st December - 7am-8pm
Tuesday 22nd December - 7am-8pm
Wednesday 23rd December - 7am-8pm
Thursday 24th December – 8am-4pm (Christmas Eve)
Friday 25th December – closed (Christmas Day)
Saturday 26th December – closed (Boxing Day)
Sunday 27th December - 8am - 8pm (normal)
Monday 28th December - 7am-8pm
Tuesday 29th December - 7am-8pm
Wednesday 30th December - 7am – 8pm
Thursday 31st December – 8am – 4pm (New Year’s Eve)
Friday 1st January – closed (New Year’s Day)

View The Third Space timetable  

Take a Tour  

The Third Space Gym will operate in accordance with government physical distancing policy. However,  Spa services are suspended at this time. Please accept our apologies for any inconvenience this may cause.