The RC in Clayton (next to the WUSL main campus, but not so close to West End, which is where their med school is located) is one of the worst RCs in the system. I remember having arguments about my room not yet being serviced at 4-5 pm and similar service failures. They also tried to stick me with their own overpriced car service when I had clearly requested a regular taxi to go to the airport. Avoid if possible, although I wasn't impressed by another chain hotel there (Sheraton?) either, nor the HR downtown. IIRC there's a very nice boutique hotel on the other side of Clayton with a renowned restaurant if you want a nice place to stay in this area. [There's also a nice executive education and conference center on campus, but I don't think it's open to the general public.]