Grady Memorial Hospital is a safety-net hospital (or, at least it's supposed to be). That pretty much guarantees that it's going to be underfunded from all of the welfare and under-privileged patients that strike out from their payments (of which is supposed to be partly off-set by payments from the state). It's also going to be busy as hell.
I'm not sure how good of a learning environment it's going to be. It's had a pretty noble reputation from its history, but it's got financial troubles and as an extremely busy and underfunded hospital, I'm not sure how much learning time you'd get. I imagine they could use the help though?
--Garfield3d