Elegant 3-Bedroom Residence with Staff Room minutes from Central Park   Perfectly situated at the nexus of culture, convenience, and classic Upper East Side refinement, Residence 4B at 25 East 86th Street offers a rare opportunity to own a gracious prewar home in one of Manhattan's most distinguished neighborhoods and sought-after buildings.   Accessed via a semi-private landing, the home opens into a gallery that serves as the central axis, with both the public rooms and bedroom wing radiating outward to create a floorplan that is balanced, grand, flexible and inviting. Classic prewar detail -9-foot beamed ceilings, and herringbone virgin oak floors-add timeless character, while oversized windows flood the interiors with natural light.   The residence includes three well-proportioned bedrooms, three full baths, and a versatile staff room with a private entrance. The expansive living room is anchored by a working wood-burning fireplace, while the formal dining room stands apart, ideal for entertaining on a grand scale or more intimate gatherings. Off the kitchen, a flexible bonus room offers adaptability to suit your lifestyle needs, whether as a home office, pantry, or other customized use. The kitchen and bathrooms, thoughtfully renovated not long ago, provide modern comfort and style with the potential for personalization through minor updates. Ample closet space and a washer/dryer further enhance daily functionality.   Built in 1929, 25 East 86th Street is a distinguished white-glove cooperative celebrated for its attentive service, led by a resident manager and supported by a full complement of staff on duty 24 hrs. With 50% financing permitted and exceptionally low carrying costs, the building represents one of the best values on the Upper East Side.   Its location is unrivaled: just one block from Fifth Avenue and Central Park, moments from the Neue Galerie, the Metropolitan Museum of Art, the Guggenheim, and the cultural treasures of Museum Mile. Nearby Madison Avenue offers luxury boutiques, acclaimed dining, and charming cafés, while the 86th Street express stop, Q train, and multiple bus lines make for effortless connectivity across the city.   In a neighborhood renowned for its cultural richness, architectural beauty, and proximity to green space, this residence offers a rare blend of history, sophistication, and convenience.