Mayfair’s iconic Art Deco building is a favourite amongst rock stars and royalty. The suites have been revamped by designers like Diane von Fürstenberg and Lord Linley, but even the more affordable rooms have star-quality. Be sure to try one of the concoctions in the “Le Fumoir” bar, where you might run into Hugh Grant toasting Sarah Jessica Parker. The Afternoon Tea in the lobby is a must!