“This 18th-century château in the Flemish town of Cassel opened as a smart hotel in 2005 and adds a luxurious new element to the hotel scene in the area. There’s a wide choice of rooms, each individually themed (3 suites, 7 rooms, 2 cottages), a fine view from the sweeping restyled veranda and a sybaritic spa. For serious pampering, close to the Channel Ports, and to three golf courses.”