If you're looking for an affordable place near the DC metro system this is a great choice.
Every door has an electronic lock. There is a common kitchen with a small table to eat at, a common fridge with ice, sink, dishes etc. I imagine if you were inclined you could bake or cook but we didn't try that.
There's a couch in the front room if you wanted to relax outside of the room.
There are a couple restaurants nearby that you can walk to or order from.
The room has a TV with streaming options (the placement in our room was a little odd, but wasn't a big deal).
Tips for the Metro: You can get anywhere near the National Mall fairly quickly on the Metro.
If you're planning on walking the best way when getting off the metro is to exit the station and turn left. Walk a few hundred feet and you'll come to a ramp (not the one with glass walls, the one with a metal wire covering) and a set of stairs. Both take you down to the road that will lead you to the AirBnb. It's a 10-15 minute walk to the place from the Rhode Island Station.
If you're heading to the Airbnb take the Red Line towards Glenmont. You can always call an rideshare car to and from the metro which will run between $9-$12 before tip.