Recently stayed two nights with my mother and daughter at the JW Marriott Chicago on points. Platinum status resulted in an upgrade to an executive level room in what may have been the quietest part of the building - we didn't hear a thing (which was wonderful). Room was spacious, clean and incredibly comfortable. The staff was top-notch - very professional, welcoming and helpful. Executive lounge staff was particularly cool under pressure (absolutely packed with large families both Saturday and Sunday mornings). The pool area was relaxing and well appointed. The location was quite convenient to all of the downtown sights. Would stay here again in a heartbeat.