What a fantastic place to stay! The residence was very clean, everything was exactly as described, and the amenities were perfect! The location is extremely accessible to multiple forms of transportation including the train and bus. DuPont circle is very close but there really isn't much traffic noise (other than a little hustle/bustle of city life), but just outside are some nice cafes and restaurants if you don't want to go far. There's also a CVS about a block away that's easily accessible for any last-minute needs.
The BnB is very clean, all of the amenities are well-maintained, and the host is super-responsive to all of our questions (and we had a lot!). They were very courteous and attentive to our needs, and again, the amenities were exactly what we needed! Some folks here commented about noise upstairs, but to be honest, I really didn't hear anything that would be any kind of a bother. I mean, you're in the city, what do you expect? Seriously, it was never an issue for us at all, and we had a 1-year old who wakes up to a single floorboard creaking, and he slept just fine!
If you drive in, we recommend you park the car (street parking permit is provided), get yourself a DC Pass, and take advantage of easily accessible public transport around the DC area! Overall, this residence is a treat and highly recommended!