My husband and I had a GREAT stay at David & Carrie's apartment. It is located very close to the National Mall, Eastern Market, and a handful of bars and restaurants along Pennsylvania Ave. I felt very safe walking around the neighborhood both during day and nighttime.
The apartment is very clean, comfortable and functional. The space is small, but doesn't feel small. And the bed is very, very comfortable. We opted to stay in late one morning because we didn't want to get out of such a comfy bed.
David & Carrie are wonderful hosts. They provided us with directions and instructions on how to get into the apartment a week before our trip, and had great advice on places to see and which Metro stops to use. They introduced themselves on the second day of the trip, they are both very friendly and welcoming.
We did not have one negative experience staying at David & Carrie's. We highly recommend it!