I've lived in Washington for about four years now and really love it. There is so much do here, both in the city (all walkable) and at the many national and state parks (including Rock Creek Park which is less than a mile away).
On the other hand, I really enjoy traveling. One of the things I love about Airbnb is it helps people to live and experience the city as a local.
No matter where you stay I hope you have a great visit to DC!