This unique 2-bedroom, 2-bathroom duplex defies cookie-cutter convention without sacrificing practicality.  On the first level, a spacious, sunken living room adjoins a private, planted garden for seamless summer entertaining.  The elegantly-appointed kitchen is open to the living and dining spaces, and a full bath has been added to accommodate guests.  Upstairs, the private quarters consist of two bedrooms, including a master bedroom with an enormous walk-in closet, a 4-fixture bathroom and a centrally-located washer/dryer.  This pet-friendly boutique cooperative is located on a charming tree-lined block and offers residents a part-time doorman and live-in superintendent.