Welcome to "Serenity," an architect-designed, turn-key, four-season retreat on the crystal waters of Otter Lake. This extraordinary property rests on an 11.93-acre point with 1,771 feet of natural shoreline, offering unmatched privacy, breathtaking views, and a deep connection to Muskoka's rugged beauty, all just 10 mins from Huntsville's amenities. Approach via a winding granite lane that opens to the entrance courtyard, where the home's sweeping rooflines, hand-cut granite, and walls of glass reveal glimpses of the lake and Serenity Bay. Inside, the soaring 25-ft great room makes a dramatic impression with floor-to-ceiling windows, a granite Rumford fireplace, and a wall of glass that opens to the lakeside terrace. The open-concept chef's kitchen, dining room, and great room are designed for effortless entertaining. The kitchen showcases a 12-ft Brazilian granite island, gas cooktop, and stainless steel appliances. Host unforgettable dinners surrounded by nature, with sliding doors that extend the living space to a covered terrace, perfect for lakeside dining, sunrise coffee, or fireside evenings under the stars. A separate family room provides a cozy retreat, ideal for games, TV, or curling up with a book, with sliding doors that invite the outdoors in year-round. The primary wing is a private sanctuary featuring a Scandinavian wood stove, walk-through closet, motorized blinds, and a spa-like ensuite with pebble wall and rain shower. Two additional lake-view bedrooms and a stylish four-piece bath complete the west wing. Upstairs, a loft offers a fourth bedroom with an ensuite, overlooks the great room with sweeping lake views, and includes space for ping-pong or yoga. A cedar path leads to the shoreline, offering multiple seating areas, a steel fire pit set on the rock, a dock for swimming, diving, or tranquil paddles. Hear the call of the loon as it drifts across mirror-like waters, capturing the essence of a true Muskoka escape on this motor-free lake.