Rockhaven Homes Newest Townhome Community. The Brownstones at Cosmopolitan are the latest in Modern Brownstone architecture. This community offers 5 STAR Amenities -huge swimming pool, large private gym, piano lounge, 24 seat movie theater, private billiards room, 24 hr concierge, valet dry cleaning and 2 blocks from Marta! Walk to everything & just minutes away to the BEST shopping and Dining in Midtown and Buckhead. These homes feature modern design with gourmet kitchen and custom cabinets, 10' Ceilings on Main and have very open floorplans.