The Mansion House is a Brooklyn Heights landmark, distinguished by its charming front garden courtyard with gas lamps, and a gracious doorman lobby that captures the building's classic prewar glamour. Apartment B57 is an exceptionally spacious legal one-bedroom on the fifth floor, currently configured to provide a second sleeping area with a privacy screen, a sliding-door separation and a wall of closets. This is a flexible and unusual feature that allows the apartment to adapt easily to different needs. A generous entry foyer, with two deep closets and room for a bench or seating, provides a gracious arrival and plenty of practical storage. From here, the entrance gallery opens into a large sunken living room, ideal for both relaxing and entertaining. Two sun-filled east-facing windows overlook historic First Presbyterian Church and peaceful College Place. A separate dining area leads to the bright, windowed kitchen, thoughtfully equipped with plentiful custom cabinetry, marble countertops, a Five Star gas range with pull-down ventilation and lighting, Fisher & Paykel refrigerator with water and ice dispenser, and a concealed Miele dishwasher. A stainless-steel sink with Franke faucet completes the space. A door separates the bedroom and bathroom from the main living areas, creating a welcome sense of privacy. The oversized bedroom easily accommodates a king-sized bed, dressers and a work-from-home area, with two rear-facing windows providing lovely natural light and garden views. Two deep walk-in closets add to the apartment's exceptional storage. A large private storage crate in the basement also transfers with the apartment. The windowed bathroom features both a walk-in shower and full-size bathtub, along with a Porcelanosa vanity and toilet. The Mansion House's Art Deco character is beautifully maintained. This pet-friendly cooperative offers a doorman from 7:00 a.m. to 11:00 p.m., on-site porters, a live-in superintendent, a large and well-maintained laundry room, and basement bike storage. All of this is in the heart of Brooklyn Heights, moments from neighborhood restaurants, cafés and bakeries, with Brooklyn Bridge Park and the spectacular waterfront views of the Promenade just a few blocks away. Multiple nearby subway lines provide easy access to Manhattan and beyond. Exceptional space, flexibility and storage in one of Brooklyn Heights' most distinctive prewar buildings.