Jw
I just checked out of the JW yesterday for my second stay this year.
Facilities, service, food are all excellent and I would strongly recommend. When I was there in May, I met Mr. Marriott (the younger) himself who was visiting.
They treat platinums especially well and the lounge is outstanding, with custom eggs in the morning, a two hour cocktail hour with great snacks and free wireless internet. It is open until 230 in the morning to accomodate those arriving on those pesky night flights. There is a concierge on duty outside the lounge 24 hours per day to assist with anything you need.