nice location, average price
Ok so it is a Westin which means it is pretty much the same as every other Westin on the planet.
I did particularly like the double head shower design- very comfortable. 
The location is great for the charlotte convention center and a couple of blocks walk from central Charlotte (i.e. restaurants, bars, etc). 
I did not like the lack of willing to call a cab, where the airport car service was pushed a little too hard. 
There is parking at 18 USD per day and it is easy to find a space. 
Overall it is what you would expect from Westin!