Just an update... may stay at the Sheraton was very nice. I was given an upgrade to a corner suite on the 23rd floor. The exec lounge was very nice (good food in the evening). As many mentioned, the hotel seems to be falling apart though ... and I had to go downstairs twice because the lock was broken on my door and I couldn't get it.
Aside from that, it was a pretty decent stay. I'll see how the Westin compares next time.