I came to DC for a week and enjoyed my stay in Sean and Megan's apartment. The flat was very cozy and thoughtfully laid out to make the most of the space. I liked having access to a full kitchen (and a coffee maker!) which is unusual for basement apartments. Given it is an older house, it is not surprising that you can hear a few creaks from the upstairs flooring, but this only happened during normal waking hours. The internet worked great and check in/check out were smooth.
The house is well-located and is just steps from the Metro, a CVS, and a Safeway. I also enjoyed several visits to DC's best bagels at Call Your Mother just down the street. Overall, highly recommend!