Part of the Rocco Forte empire, the city’s reigning grande dame sits on the former site of a prison – but these days everyone from politicians to stars is lining up to check in. Ultra-plush rooms and suites tap Belgium’s heritage, from Magritte-inspired objets d’art to a suite fêting homegrown fashion icon Diane von Furstenberg. Add in a fine Italian restaurant and a location yards from the Grand-Place, and it’s easy to see the appeal.