My husband and I stayed for 4 nights and it was just what we needed. Quiet and safe neighborhood and it's super close to the metro (about a 15 minute walk). Plenty of restaurant options around and we were able to walk to the National Cathedral by foot without a problem.
As suggested, the studio comes fully furnished. Wifi was pretty reliable. Plenty of hot water from the shower. The noise level sometimes can be a little loud above but it wasn't so much a huge issue for us since we've been out for the most part. It's probably with how the house was built and the floor doesn't have enough insulation to suppress the noise. Come prepared with some bug spray if you're coming out in humid weather, the mosquitoes do lurk near the doorway.
If you don't mind the old charm of the place, this airbnb is definitely for you! Given the location and the price, I would say it's a pretty fair find. And Kris the property manager has been so on top of everything. He gave us a call to see how we checked in, and addressed any issues we came across immediately.