I stayed at the JW MM for a conference and it surpassed my expectations. The rooms were spectacular, clean, modern and overall just classy. The staff was also very impressive. I had a few scheduling issues, baggage requests, reservation changes and they accommodated each one in a professional manner with a great attitude. I had to have one bag brought up to my room and it took appx. 10min which is rather impressive for such a large hotel during a busy check-in time. I hit the bar a few times and they were also very helpful, had some great drinks and good apps.
PS- really liked the espresso machine in the rooms.More