I didn't like Dc as much as I expected I would. After DC i visited NY which felt like the real capital of the US and it easily beats DC. DC appeared tome to be a rough city with a lot of homeless people. It lacks character and a good atmosphere. On the one hand a lot of poor people and on the other hand a lot of pretentious yuppies. Nice fact is that most museums are really good and for for free, which makes it excellent for a two-day visit.
Insider Tip:The Newseum was expensive but definitely worth it. I recommend to take a lot of time there.