A swim can be a useful break between sightseeing days. London Marriott Hotel County Hall's own leisure-club FAQs confirm that hotel guests have complimentary access to The Club, including its 25-metre heated indoor swimming pool and changing facilities. It is worth checking the current opening hours and any children's swimming times with the club before making plans. The supervision rules are important: children under 16 must be accompanied by a responsible adult at all times, and there is no lifeguard on duty. Guests aged 16 to 18 may swim unsupervised, but cannot supervise younger swimme