Commanding a premier west-facing position on the pristine shores of Acton Island, this bespoke four-season retreat is the definitive Lake Muskoka sanctuary. Designed to celebrate its rare western exposure, the setting offers a front-row seat to legendary sunsets from every vantage point, whether relaxing in the great room, dining on the expansive lakeside deck, or lounging on the show-stopping boathouse sundeck. The residence is anchored by a breathtaking open-concept living area, where soaring ceilings and a spectacular wall of glass disappear, seamlessly merging the interior with the lakeside landscape. A designer kitchen serves as a sophisticated social hub, featuring white stone counters, a massive prep island, and high-end finishes, including a European-style induction cooktop. The accommodations are thoughtfully designed for privacy and comfort, offering four spacious bedrooms, three of which are paired with their own dedicated en-suite bathrooms. The main floor primary suite provides a private escape with its own walk-out deck and a spa-inspired ensuite complete with heated floors, a soaker tub, and a sleek curbless shower. A main floor powder room and laundry room complete this level. The lower level is anchored by a bright family room with a dedicated bar, a fireplace, and a walk-out to the lakeside grounds. The detached triple-car garage has an overhead loft, and the guest bunkie, with a studio/gym, and two-piece bathroom, provides additional private spaces to relax. Outside, paths lead to a lakeside fire pit and a boathouse with an oversized slip and sundeck. Ideally situated on a year-round serviced road, this remarkable property is just minutes from the elite fairways of Oviinbyrd and other premier Muskoka golf courses, as well as the vibrant boutiques and dining of Port Carling and Bala.