Stayed there a handful of times and this is one of the few hotels that really goes above and beyond with PP (and presumably plat) members. The Chambers upgrade is great, although a couple times I was upgraded to the executive suite - I can't remember the cute name for the room - and like that room just as much. As stated above, the lounge is great and the lounge attendants are top notch.
The only annoying aspect of their service is their insistence on escorting you to the room and explaining everything to you. I hate being rude and refusing the service, but generally when I check in to a hotel I want to go horizontal or refresh myself. I don't want to stand in a bathroom in close proximity to a stranger and discuss the virtues of their soap at length. Maybe I've just gotten cranky in my old age though.