Stay at this 4.5-star luxury resort in Muskoka Lakes. Enjoy free WiFi, 2 outdoor pools, and 5 restaurants. Our guests praise the pool and the helpful staff in our reviews. Popular attractions Muskoka Sports and Recreation and The Rock Golf Course are located nearby. Discover genuine guest reviews for JW Marriott The Rosseau Muskoka Resort & Spa along with the latest prices and availability – book now.