Direct Central Park Exposure on Fifth Ave.Located in the Upper East Side Historic District, this seven-room apartment boasts unobstructed park views from the living room, master bedroom, and library. Currently configured as two bedrooms with en-suite bathrooms, a library and a staff room, this elegant home could easily be converted to three bedrooms, all with en-suite bathrooms. The gracious 16-foot gallery has custom marble floors, and leads to the expansive living room with oversized bay-windows overlooking Central Park.  Adjacent to the living-room is the library (or third bedroom) with an en-suite bathroom.  The library and living room create a magnificent set for entertaining. On the opposite side of the gallery is the formal dining-room and windowed gourmet eat-in kitchen; equipped with top-of-the-line appliances and custom white wood cabinetry. The impressive, sun-bathed master suite has direct park views. The generously sized second bedroom has an en-suite bathroom and is outfitted with custom built-ins.  Further features include custom moldings, electronic window shades in the living room, and excellent closet space.Built in 1959 and designed by Sylvan and Robert Bien for William R. Buxbaum, 900 Fifth Avenue is a 50 unit, 19 story full-service luxury co-operative.  The building has 24-hour doorman, landscaped roofdeck, garage, gym, basement storage, and a bike storage room with bikes available for tenant use. 900 Fifth Ave is just steps away from the Metropolitan Museum of Art, the Frick, and the Guggenheim museums, as well as the finest shopping and dining.  This is truly one of Manhattans best and most desirable locations.