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)

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.