Third Street, Park Slope's grand gateway to Prospect Park, has long been a coveted location for its extra-wide sidewalks and gracious frontage. This co-op apartment, as classic as a four-unit Brooklyn brownstone gets, graces the parlor floor. South-facing light through oversized windows streams into the living/dining room by day; a wood-burning fireplace will warm your cool winter evenings. The galley kitchen, with full-sized stainless-steel appliances, is big enough to prepare a feast. Two rear-facing bedrooms offer great closet space and the kind of quiet one requires after a busy day. The rear garden, exclusive to this apartment, will be just the spot for dinner soirees, intimate brunches and spring gardening. An incredibly low monthly maintenance and in-unit laundry are bonuses. And, a monthly fee of only $80 compensates a porter for the co-op's custodial needs. Fifth Avenue, half a block away, beckons with its cafes, bakeries, panoply of restaurants offering cuisines of every kind and in every price range, grocery and retail, and the historic Old Stone House -- a destination for events, outdoor and performance space and a Sunday farmer's market. Proximity to schools and transportation is amazing. (Sorry, no dogs.) These co-ops fly! Don't. Miss. Out.