At One Manhattan Square, residents can recapture their childhood by unwinding from a long day of work—in a treehouse. Developer Extell surrounded these Lower East Side apartments for sale with an acre of private park space that is landscaped for all seasons and includes fire pits, a putting green, and the unique treehouse, which has Wi-Fi and is fully furnished. The apartments at One Manhattan Square range in size from one to three bedrooms and feature modern interiors with spectacular views and the color scheme of the resident’s choice. In addition to the landscaped grounds, there is a suite of indoor fitness and entertainment amenities featuring everything from a squash court to a demonstration kitchen.