London Marriott Hotel County Hall Spa

Fancy detoxing in the building where the Greater London Council used to run the city? The Spa at the London Marriott County Hall hotel occupies the fifth and sixth floors of the landmark riverside building, in the shadow of the London Eye, replacing heated debates with hot air of a different kind. Feel the detoxing benefits of the single-sex saunas, steam room and jacuzzi in the main spa area on the fifth floor, located alongside a well equipped gym. Head upstairs and you'll find an impressively full sized (25 metre) swimming pool - possibly London's biggest hotel pool - a rare find in any city hotel let alone in such a historic and centrally located hotel - it's just over the river from the Houses of Parliament. Warm stone therapy, Carita facials, aromatic massage and exfoliating mud masks are just some of the treatments to choose from. Better still, book in for a spa package like the Ultimate Escape and you get three and a half hours of top-to-toe treatments including Decleor prescription facial, followed by an enveloping body wrap - where you're cocooned in a heated blanket - and finishing with a deluxe pedicure. A useful insider's spa tip: if you're going from the spa (on the fifth floor) to the pool one level up, don't forget to ask at the spa area reception for the security code to access the pool.