LoL - Why would we feel overshadowed by GULC students? Sure, most of us didn't get into GULC, but GW isn't THAT far behind them contrary to what people on these boards say. I got Biglaw 1L summer and 2L summer and I am not top of the class. Seems to work out just fine around here and if you are IP (which I am not), then GW has a far better program.
GW is in the nicest part of DC, but I wouldn't live right where the campus is as it's expensive as hell. It is right in the middle of the city though so it's a great location.
GW's facilities are nice. High tech, but sometimes crowded as there are a lot of students at the school. Other than cramped at times, it's a nice campus. However, no, the library is not open 24 hours, but the law school buildings are during exam periods.
I would say half or more commute from MD or VA. It's far cheaper and it only takes 10 minutes on the metro.