It may not be as rejuvenating as a vacation on a Greek isle, but a meal at this high-end Midtown eatery is sure to put you in a sunny mood. Superb renditions of classic dishes like country-style Greek salad, grilled octopus salad, moussaka and lamb chops served with herbed potato wedges combine with friendly service and a bright, airy room for an enormously pleasant dining experience; the quick lunch and pre-theater menus are winners too.