Sarah's place is in an unbeatable location, situated right next to a Wal-Mart (that I went to go get an umbrella for an unexpectedly rainy stay) and plenty of food options around during your stay in DC. The place is quiet, cozy, and feels like staying at your friend's apartment.
Though my stay was brief, the thing to know about Sarah as a host is that she is amazingly communicative. I flew in at a very odd hour due to a flight delay (around 1:30AM) and she was still up and answering my questions as I checked in. Communication is queen, and Sarah kills it!