On a balmy Sardinian bay, Hotel Cala di Volpe is a village you definitely won’t need to leave – except to head over by boat to the beach club, of course. There’s a Matsuhisa (the new Nobu) restaurant, Shiseido treatments at the spa and one of the biggest saltwater pools in the Med, helpfully located next to the barbecue. The Costa Smeralda is named for its emerald shores – get in and enjoy them with some swimming, snorkelling and scuba-diving.