Petit St Vincent Raise a glass — and a flag — for Petit St Vincent, a.k.a. PSV, one of our favorite private island resorts in the Caribbean. The resort’s 22 stone and wood cottages are widely scattered over the 115-acre island, which is constantly roamed by staff keeping an eye out for the yellow flags raised by occupants in need of food, drink, or other amenities. Otherwise, keep the red flag up and you’ll be left alone to enjoy the splendid isolation unless you want to venture down to the main resort hub for dinner, beach, spa, a game of tennis, or a hike to the 275-foot summit of Marni Hill. Rates include food and activities, but not alcoholic drinks or spa treatments and tours.