Retired superstar-chef Olivier Roellinger and his wife Jane still preside over their family's luxurious hotel empire, which includes the beautiful, castellated, 1920s waterfront Château Richeux. The rooms are sumptuously appointed, large, and airy, with a voluptuous mix of the modern and the antique. Readers rave about Le Coquillage, the hotel's Michelin-starred bistro, which specializes in local oysters and seafood platters served up in a relaxed, cozy atmosphere—the weekday lunch menu is good value for money. The Richeux is built on the ruins of the Du Guesclin family's 11th-century château, 5 km (3 miles) south of Cancale, and is surrounded by a "Celtic garden." Request one of the rooms with large bay windows, which have stunning views of Mont-St-Michel. Several miles away are two more private adjuncts to the Château, also overseen by the Roellingers: Les Rimains, with four guest rooms set in a very handsome Breton stone house, perched over Cancale's harbor; and Gîtes Marins, with two airy, almost Cape Cod–style seaside vacation houses fit for several people.