Experience elevated coastal living in this stunning top-floor corner penthouse waterfront condo at 1515 Sombrero Blvd, Unit 4A. Offering 3 bedrooms, 2.5 baths, and 2,440 sq ft, this residence showcases sweeping harbor and open water views from nearly every room. Arrive via a glass elevator overlooking the water and step into a welcoming foyer that opens to a spacious great room featuring a dramatic retractable wall of glass, seamlessly blending indoor and outdoor living. Enjoy multiple porches, including a wraparound balcony, perfect for taking in sunsets over the harbor, Sisters Creek, and the golf course. The open kitchen features a dining bar, stainless steel appliances, and flows effortlessly into the main living space--ideal for entertaining. Wake up to gorgeous views of the water from the spacious Primary Suite. The split floor plan provides privacy, while expansive windows fill the home with natural light and showcase panoramic waterfront vistas. Community amenities include assigned covered parking, a waterfront pool, tennis court, and a scenic harborfront walkway. Ideally located directly across from the Florida Keys Country Club golf course and walking distance to Sombrero Marina where you can purchase or rent a boat slip. The Marathon Jet Center, beautiful Sombrero Beach and tons of shopping and dining options are must minutes away. A rare opportunity to own a premier waterfront penthouse in the heart of Marathon.