Originally Posted by
GoSh4rks
This doesn't answer your question, but the JW is newly renovated and is outstanding. It'll definitely be better than the Westin. Lounge is decent as well.
The JW has always UGed me to a very nice suite even on points stays. The Union Sq Marriott (not the Marquis) has always UGed me to a large corner room with a nice bathroom that is kind of away from the room, also on points. I like that property better than the JW because the room is bright with a good view. I would spend the few extra points for not only the guaranty but the chance of getting an UG.