Escape the crowds and discover a rare gem in Battery Park City! Welcome to 21 South End Avenue, Unit 421/321-a spacious 3 to 4-bedroom, 3.5-bathroom duplex that offers over 2,590 square feet of meticulously designed interiors with breathtaking Hudson River views. Originally two separate 2-bedroom units, this home has been thoughtfully combined into a seamless, turnkey residence perfect for modern living. Main Level: Elevated Living and Entertaining Enter the upper level into a welcoming foyer that flows effortlessly into the expansive living and dining area. Oversized windows frame stunning, unobstructed views of the Hudson River, bathing the space in natural light throughout the day. Step out onto your private terrace to enjoy a quiet morning coffee or watch the sunset over the river. The open-concept kitchen is a chef's dream, featuring custom Poggenpohl cabinetry, matte-white quartz countertops, and state-of-the-art appliances, including a 48" SubZero refrigerator/freezer, Beko gas range, Bosch dishwasher, and built-in Miele coffee/espresso maker. A spacious breakfast bar adds a casual dining option. A double-sized den/media room on this floor offers incredible flexibility-use it as a family room, home office, or easily convert it into a fourth bedroom. Completing the upper level is a half bathroom and a laundry room equipped with a Bosch washer/dryer, utility sink, and ample storage. Lower Level: Private Retreat The lower level is your sanctuary. The sprawling primary suite boasts a custom-built home office with stunning water views, an oversized bedroom area, and a luxurious en-suite bathroom with double sinks, a walk-in shower, and elegant marble finishes. A separate dressing area offers exceptional closet space, ensuring a clutter-free retreat. Two additional generously sized bedrooms share a full bathroom and overlook the building's serene courtyard. Each room offers ample closet space and tranquil views, making them perfect for family or guests. The Regatta Condominium Located at the end of a quiet cul-de-sac, The Regatta is a full-service, non-smoking condominium that epitomizes luxury living in Battery Park City. Residents enjoy a 24-hour doorman, full-time porters, and a live-in superintendent. Amenities include a beautifully landscaped roof deck with panoramic views, a peaceful courtyard, and bike storage. The building welcomes pets, adding to its family-friendly appeal. Prime Location Positioned in the heart of South Battery Park City, this home offers unparalleled access to vibrant city living with a serene, residential feel. Stroll along the Hudson River Esplanade, enjoy nearby parks and playgrounds, or indulge in world-class shopping and dining at Brookfield Place and the WTC Oculus. Commuting is a breeze with access to the PATH train, ferries, and subway lines (4/5/6, 1/2/3, N/R, A/C/E). Don't miss this rare opportunity to own a one-of-a-kind waterfront residence that perfectly blends luxury, space, and tranquility. Contact us today to schedule a private showing!