Hotel Villa Feltrinelli on Lago di Garda, Italy.
Villa d'Este in Cernobbio (Lago di Como), Italy.
Hotel du Cap Eden Roc on the Cap d'Antibes, French Riviera (you have to love their policy that gives them the right to refuse your reservation if they don't like the way you sound on the telephone).
Hotel Martinez in Cannes, France.
Hotel Byblos des Neiges in Courchevel, France.