Nestled between Rye and Greenwich, this stunning 5+ bedroom Colonial in the coveted waterfront enclave "Greyrock on the Sound," blends quality craftsmanship with modern luxury. Tucked away at the end of a cul-de-sac, the home's wraparound porch, many windows and resort-inspired pool, seamlessly integrate indoor and outdoor spaces providing a luxurious sanctuary whether you work from home or a city nearby. Step into the main level and be greeted by a double height entry foyer where adjacent formal living and dining rooms, each with coffered ceilings, make for easy living and gracious entertaining. Walk down the entry hall to an open-concept kitchen equipped with top-of-the-line stainless steel appliances (including a gas cooktop, dual wall ovens, and a wine fridge), custom cabinetry, marble counters, a large center island, a breakfast area, and a walk-in pantry. The kitchen opens to a family room with 3 exposures and a wood-burning fireplace with a sleek marble surround. An adjoining office with ensuite bathroom, and close by mudroom/laundry room and 0.5 bathroom, complete the main floor. Take the front or rear stairs to the second level which features a large primary suite with a sitting area, spa-like bathroom, and spacious walk-in closets. Three additional bedrooms are well proportioned, each with its respective ensuite bathroom. The second floor also includes a large bonus room which is perfect for movie and game nights. The finished lower level boasts a gym on one side, and an apartment-style renovation on the other, complete with a kitchen and full bathroom. A walkout staircase leads you from the lower level to the flat backyard. The perfectly sized backyard is outfitted with a tv, outdoor speakers, a patio, and a saltwater pool (with heating, LED lighting and fountain options). Your home, with a 3-car heated garage, sits on 0.5 acre of manicured lawns bound by mature evergreen trees. Stroll down to Greyrock's private beach, kayak on the Sound, enjoy sitting on the dock... experience it all. Conveniently located to downtown Rye and the Metro North train station (45 minutes to NYC). Greyrock on the Sound is a hidden gem that can be found off of Grace Church Street where the City of Rye welcomes you. 16 Hilltop Drive is the one you've been waiting for!