I have some friends that work there and say there are pros and cons. Pros: Since it is a teaching hospital, there are a lot of interesting medical cases and opportunities for learning. Also, there are always physicians and residents available. Cons: You have to pay for your garage parking (but you get some sort of discount or something), it is in a SCARY neighborhood, and since it is such a large campus nurses usually have to wait a long time for pharmacy to send meds, etc. These are just a few things I have been told from buddies that work there.
There are a union hospital, I don't know if that is a pro or con for you.
I was a patient there a few times and didn't have positive experiences so in that respect, I wouldn't recommend it.