Harbor Isle is a private community In Windermere, Florida. Harbor Isle overlooks the beautiful Lake Down. Harbor Isle is a small community which boasts custom-built lakefront and interior estate homes. The schools for this area are Thornbrooke Elementary School, Gotha Middle School, and Olympia High School. Harbor Isle has the benefits of a quiet secluded community with the great Windermere location. Harbor Isle is in close proximity to many upscale retail and fine dining locations.