Set on over four acres surrounded by conservation, this exceptional Polpis estate with sweeping views of Nantucket Harbor features two stunning homes, each with its own heated pool. The main residence offers 4 bedrooms, a vaulted living room with a wood-burning fireplace, a gourmet kitchen with custom cabinetry and top-tier appliances, multiple decks for entertaining, and a flexible office/guest suite. The primary suite enjoys harbor views, a walk-in closet, and a spa-like bath, with three additional en-suite bedrooms. The updated guest house includes an open-concept living area with a new kitchen, 3 bedrooms with including a king suite, two guest bedrooms, and a finished lower level with a TV room and full bath. With outdoor showers, sunset decks, and private landscaped grounds, this property is a true island compound.