Refined Prewar Elegance Off Park Avenue Grand 3-Bedroom with Infrastructure Upgrades in a Full-Service Upper East Side Building Located just off Park Avenue on one of the Upper East Side's most distinguished tree-lined blocks, this classic three-bedroom, two-bathroom residence seamlessly blends timeless prewar architecture with thoughtful modern upgrades and white-glove service. Set within a full-service cooperative featuring a full-time doorman and live-in superintendent, the home offers the level of comfort and prestige synonymous with one of Manhattan's most coveted neighborhoods. The apartment boasts a gracious, well-proportioned layout with high ceilings, hardwood floors, and elegant prewar details throughout. A formal dining room enjoys open views beyond neighboring buildings, filling the space with exceptional natural light and an uncommon sense of openness for the area. Currently configured as a three-bedroom, the residence offers the flexibility to convert to a four-bedroom to accommodate a variety of living needs. Both bathrooms are outfitted with premium Waterworks fixtures, and capped plumbing located off the third bedroom provides the opportunity to easily restore a third full bathroom with a shower. Through-wall air conditioning ensures year-round comfort while preserving the home's architectural integrity. A standout feature of this residence is the comprehensive plumbing infrastructure upgrade completed by the current owner, including the replacement of key branch lines connecting to the building's main risers. This significant and often costly improvement-especially in prewar buildings-has already been completed, allowing future renovations to proceed with greater ease and efficiency compared to similar units. All apartment windows are scheduled for replacement in the near term, further enhancing energy efficiency, insulation, and overall comfort. The home also includes a private basement storage cage, notably generous in size-approximately equivalent to a small bedroom-an exceptional and rare amenity in Manhattan. This is a unique opportunity to own a meticulously maintained residence in a well-managed, full-service building, just moments from Central Park, Museum Mile, Madison Avenue boutiques, and world-class dining. Additional Details: 2% flip tax paid by buyer $1,680/month assessment through December 2027 PAID BY SELLER Originally configured with 3 full bathrooms (currently 2) All showings and open houses are by appointment. Please contact us to schedule a private viewing.