Christa's place in Capitol Hill ended up being absolutely perfect for our visit to D.C. As far as location, this was perfect because we wanted to use public transportation. It is a short couple-block walk from Union Station (Metro, Amtrak) and the DC Circulator bus. There's a grocery store one block north and two playgrounds within walking distance for the kids.
We have two young kids (7 and 3) and we wanted to feel like we were at home while on our visit. This place suited us very well. The kids each had their own bedrooms and bathroom. The second floor laundry was perfect so we could pack less. The kitchen was fully equipped and we cooked many meals during our stay.
I would book Christa's place again in a heartbeat. I was so happy with everything!