One month free rent on select floor plans. See leasing for details. Now Open. Hadley is a brand new community in Mercer Island featuring a variety of floor plans to choose from; open studio, 1 to 2 bedroom apartment homes. The community features high-end design and fluid function to complement Mercer Island's natural settings and tone. Each of the floor plans are made for every day's needs, and thoughtful hand picked designer details curated to match any personal style. At Hadley, enjoying the good things is your new standard of living. Spaces are designed for entertaining, amenities go beyond the extra mile, and responsive management services help ease your daily routine.