Mary and Mac Klein own one of the best-known and most-loved bars on Miami Beach, Mac's Club Deuce, but it is their other, more obscure, establishment in Miami's Design District for which they deserve accolades. Piccadilly has been in place since 1965, but the Kleins have only been in control for six years. While keeping some of the restaurant's original favorites (they still dish up a "hot brown," smoked turkey served open-faced on sourdough bread and covered with cheese sauce), they have added much to the menu. Mary, in particular, pays close attention to details. "I try to make sure everything is fresh, nothing out of a can," she says, noting that she still mashes the potatoes herself. Other popular items on her menu include the teriyaki steak, with a recipe Mary brought back from Japan; and scallops with shiitake mushrooms over pasta. Indeed all of her pastas are special. So why isn't Piccadilly more popular? Location, location, location. People are reluctant to wander into the Design District after dark, Mary admits, though she's never had a customer mugged or robbed the entire time she's been there. But things are looking up for Piccadilly. With more and more businesses entering the area, and word of her food spreading, Mary says she may actually turn a profit this year. Better head down there tonight, while you can still get a table.