If your idea of a perfect workout includes hitting the squash court rather than hitting the treadmill, One Manhattan Square’s state-of-the-art fitness center has got you covered. As part of the Extell-developed tower’s 100,000 square feet of indoor and outdoor amenities, residents of the Lower East Side condos for sale have access to a multistory fitness center with water views, a full basketball court, squash court, top-of-the-line golf simulator, 75-foot indoor saltwater swimming pool, and a two-lane bowling alley.