Great apartment (clean, functional, etc.) but with two outstanding features - the location (close to the metro, lively Adams Morgan, the zoo for the kids) and the host, Ethan, himself!
Communication was second to none from the moment I booked this place (I'd requested a high chair for our baby which Ethan went out and bought immediately!), to when we arrived (after a 3/4hr+ plane delay with a young baby at night in the middle of a storm we were frazzled but instantly greeted with a huge smile and extremely helpful Ethan which made all the difference), and finally to when we checked out (a late check-out and we'd misplaced our toiletries bag which Ethan held on to and was in touch with a family member to arrange a collection).
It was my first time to DC and people like Ethan leave a wonderful lasting impression!