Rarely available high floor residence at 45 East 89th Street, 22AB offers sweeping Central Park and skyline views, two private balconies, and a flexible layout currently configured as 3 to 4 bedrooms with three-and-a-half baths. With condo-style rules, flexible ownership, and investor-friendly policies, this is a unique opportunity in a prime Upper East Side location. A gracious entry foyer leads to a large west-facing living room with oversized panoramic windows that frame Central Park and open directly onto a private balcony. Adjacent is a well-proportioned dining room that comfortably accommodates large gatherings, creating a practical flow for both entertaining and everyday use. The windowed eat-in kitchen is designed for efficiency, offering substantial storage and high-end appliances. A separate library/bedroom with open western views functions well as a den or guest room, adding to the home's versatility. The primary suite forms its own private wing, featuring a south-facing terrace, a generous sitting room and office area, an ample walk-in closet, and a luxurious en-suite bath with double sink, deep soaking tub, and stall shower. Two additional south-facing bedrooms, one with a bath en-suite, benefit from excellent storage. A dedicated laundry room and extensive built-ins further support comfortable daily living . The apartment includes an adjacent separate storage room. With exposures to the west, south, north, and east, the residence enjoys dramatic vistas that include Central Park, the Reservoir, the surrounding skyline, and striking sunsets. 45 East 89th Street is a full-service, pet-friendly building offering a full-time doorman, concierge, elevators, pool, playroom and gym. Located moments from Central Park, major transportation, dining, and cultural institutions, this home combines scale, views, and services in a sought-after Carnegie Hill setting.