Awesome is right...NOVA or South Maryland would be a bit cheaper...but it really depends. Group houses in dc are probably the cheapest way to go. You can find some for as low as 400 something dollars a month...which is pretty amazing for NW DC. I'm looking for housing in the city right now b/c im graduating this may and ive seen some pretty good deals. The parts of NOVA that are 10-25 minutes from DC can be almost as expensive as DC so do your research.
Awesome-its great that you applied. Being a freshman is wonderful because you have a lot of time to build up your resume and its great that you are thinking about this early on. That's a smart move. If you get the internship, GREAT, FANTASTIC. But if not, you can always reapply. I read an article about a girl who didn't get the internship the first time she applied (they told her she needed more work experience) and so she went out and got some, reapplied a year later and landed the intership. Being young just means you have more opportunities.
By the way, im from NOVA too
. Arlington, Falls Church, Fairfax areas.