A Sardinia yacht charter is a Mediterranean dream. This summer, make your luxurious way along the Costa Smeralda on a private yacht —diving off your superyacht into clear, sunlit seas, walking wildflower paths along soft sand dunes, and living it up in some of the most glamorous marinas in the world. Watch the champagne spray from your deckchair at Phi Beach Club, dance under the stars at the Billionaire’s Club, and sink your toes into the heavenly white sands of Sardinia’s beaches, where sapphire water laps at red rock coves