I would go with Notre Dame even if you want to work in DC. Almost every student at GW is going there over some other school because they want to work in DC - why else would you pay such a huge premium when there are similar options for a fraction of the price? Thus, when it comes to OCI, the GW student will be competing against almost all of their class - the supply of applicants far far outweighs the demeand from the firms because firms want diverse summer classes. In contrast, your classmates at Notre Dame came there, for the most part, for the reputation of the school, not so they could get a job in Indiana. They will be looking to go all over the country, meaning that a relatively small percentage of your classmates will actually be trying to end up in any one market. This greatly tilts the supply side. For example, the DC firms want a Notre Dame student, just like they want a GW student, a UVA student, a W&L student, G-town student, a Harvard student, etc. So, the supply/demand comparison is much different, and I think better, for the Notre Dame student, plus you're not paying a ton to still live a 40 minute metro ride from school.
I visited GW, but not ND. I visited GULC the same day and was very impressed- GULC is kind of this independent little colony with very nice facilities, including a law school pool(!). GW was pretty bland in comparison, and I didn't really care for the set up of the campus. The law school building is like all the other buildings on GWU, just on a corner amongst other random buildings throughout a few blocks downtown. That said I would have considered GW only with a large scholarship.I understand that NDLS facilities are quite old, but I've always loved the ND campus, and the tuition (with fellowship) + cost of living and the alumni network are really attractive to me; I'm going to ND.