We'll be in town for a Sunday night in June. We like to graze from place to place, usually bar dining, and like to cover as many new places as is possible in one night. We are not strangers to NYC, We are wondering what would be a good "food" neighborhood to spend an evening in, where we could visit three or four really good restaurants/bistros/neighborhood joints, that would be within walking distance of one another. We'd prefer to stay in Manhattan. Price, atmosphere, ethnicity - not issues. Food - that's what we are interested in.