Anbang, the Chinese investment group that purchased the Waldorf Astoria in 2014, has officially filed plans to convert most of the iconic hotel into residential spaces. The billion-dollar effort will turn over 31 floors of 500 guest rooms into “exclusive” apartment units. The remaining 300–500 units will remain hotel rooms, though they’ll likely get some souped-up features. The base of the Waldorf will feature a fitness room, shopping center and restaurants.