Great location and price, especially since it includes a mini-fridge, microwave, Keurig, and washer & dryer (we've learned the hard way in the past that many DC hotels charge extra for things like a fridge).
Parking is also free but you need to prepare a visitor pass before your trip if you will be parked on the street M-F, and it is city parking so you will need to parallel park tightly, fold in your sideview mirrors, and hunt for a spot. We do this where we live, but for some that might be new.
We appreciated the wall-mounted programmable digital heaters in the bedroom and living room and the air purifier to keep the basement warm and fresh. We didn't use the pull-out couch or the air mattress in the closet, but it was nice to know there were so many configurations available. The bed was more firm than we are used to, and there is a lot of sound that comes through from above. There are lots of packs of ear plugs on the nightstand.
Ultimately, it's a city experience for much less than other accommodations nearby. We went to shows, museums, restaurants, and historic sites all on foot or using the subway. Most of our time was spent outside the AirBnB, and then we had what we needed while there.