Thought we'd give it another try, but. . .
My husband and I decided we'd try the Westin-Charlotte again, as we wanted a hotel convenient to the uptown. Unfortunately, once again we arrived to find the check-in desk poorly staffed, no one behind the Starwood Preferred desk (as was our experience on our last visit). It also sounded like the check-in staff were handling questions which sounded like "concierge-type" questions (of course, there was no one behind the concierge desk either). As we were finally checking in, I noticed all of the computer keyboards for check-in looked as though they were sitting on shoeboxes which had been wrapped in black paper which was torn and frayed. Not a good first impression to be sure.
When arriving in our room (which was on the Starwood Preferred floor), we noticed there was about a half inch of water in the tub (which was stained) due to the dripping faucet. 
We have stayed in a number of Westin hotels across the country, and this one is certainly NOT up to standard. Will probably not be giving it a 3rd try.