Sun-Drenched 3-Bedroom / 1.5-Bath Penthouse Duplex on Quiet Cul-de-Sac. Welcome to this bright and airy penthouse duplex ideally located on a peaceful cul-de-sac at the vibrant border of the South End and Back Bay, in between Columbus Avenue and St. Botolph Street. The upper level features an open-concept layout with a spacious living and dining area, a stylish kitchen outfitted with stone countertops, SubZero refrigerator, Thermador stove, maple cabinetry, and gleaming hardwood floors. A versatile third bedroom or home office and a convenient half bath complete this floor. Downstairs, you’ll find two oversized bedrooms with ornamental fireplaces, generous closets, and a full bath with in-unit washer and dryer. Enjoy spectacular skyline views and direct access to the beautifully renovated Titus Sparrow Park and the Southwest Corridor Path—perfect for outdoor enthusiasts. Heat and hot water, and one off-street parking space included. A+ location near shopping, dining, transit, and more.