Spacious and Light-Filled Three-Bedroom, Three-Bath + Office Co-op with Separate Laundry and River Views. Located along the coveted enclave of East End Avenue on the Upper East Side, Residence 4JK is a sprawling combination of two adjacent apartments plus common hallway space, resulting in an exceptional blend of scale, functionality, and comfort. Beautiful wide-plank hardwood floors run throughout, adding warmth and sophistication to the expansive layout. This impressive residence features three bedrooms, three full bathrooms, and a separate office/den offering incredible flexibility for both everyday living and working from home. The generous living and dining area is flooded with natural light, enjoying northern, southern, and eastern exposures that frame lush tree-lined scenery for much of the year and picturesque river views in the winter. The open, renovated windowed kitchen is suburban in scale and designed for both everyday functionality and effortless entertaining, featuring a six-burner Wolf range, abundant counter space, a full-size wine refrigerator, and a large island with extensive built-in storage. The oversized primary suite is a true retreat, graced with a beautiful east-facing exposure. The spa-like renovated en-suite bathroom is exceptionally spacious, featuring a double-sink vanity, a separate water closet with shower and toilet, and a generous walk-in closet. The thoughtfully designed layout features a true split-bedroom configuration, with the second and third bedrooms positioned privately away from the primary suite. Each enjoys its own renovated bathroom and an exceptional amount of storage throughout. Adding to the home's ease and convenience is a dedicated laundry area complete with a side-by-side washer/dryer and folding station. Residence 4JK is a rare opportunity to own a truly one-of-a-kind home that effortlessly combines generous scale, thoughtful design, and an unparalleled Upper East Side lifestyle. Shareholders at 10 East End Avenue enjoy the amenities of a full-service cooperative, including a 24-hour doorman, live-in superintendent, newly renovated lobby, fitness center, beautifully planted roof deck, bike room, and on-site parking garage. Pets up to 80 lbs. are welcome. Co-purchasing, gifting, and guarantors are permitted with board approval. Up to 70% financing allowed. Welcome home.