I was very impressed by this location and Abenaa's quick responses to my questions. Other than a slightly difficult entrance (the small corridor to access the standard-sized basement entrance was slightly challenging for me at 6'1"), everything was perfect. The sitting area was cute and well furnished, the bathroom was probably cleaner and more updated than any I've seen lately, and the amenities were great (especially the smart TV, quick WiFi, and December heating).
This location is pretty good to stay in if you are looking to rely solely on the Metro (a 10-ish-minute walk) or Uber/Lyft (most trips to the National Mall area were around $10-12). Although parking was not included in my stay, there were multiple hourly/overnight parking decks within less than a 10-minute walk as well as free parking on neighboring side streets (after 8:30pm on Friday). Don't let that aspect dissuade you from staying!
Thanks for the hassle-free stay!