If you don’t mind fast fashion with an Hermès-sized price tag, a high-design Hamptons summer rental is for you. Ease and sophistication are the draw at 26 Harbor Drive, the five-bedroom, seven-bathroom, 6,300-square-foot home in Sag Harbor. It’s an elegant mélange of midcentury styles (largely French) from the 1940s through the 1970s, including wall-sized wood...
