I like the Westin for staying in or for just hanging out there.
I come uptown often to meet my sweetie and sometimes we'll just hang out in their So-Co lobby bar. I love the "stream" that runs along the big windows. Very relaxing. I also like the bar in the restaurant at the back of the building.
Plenty of parking, decent staff, good bathrooms and plenty of meeting spaces. Parking is easy, but as is typical for hotels and Charlotte it is a bit pricy to park there.