This place is a gem. Let me try to sum up our experience:
Paul greeted us warmly and with some great information about the history of the neighborhood as he led us to the entrance of the apartment. Then, he had a list waiting for us of great, local places for food and drink, as well as local sights worth checking out. The ones we tried did not disappoint us.
The apartment is so nice. The outside garden is a beautiful little haven, and the inside is a cozy, clean, well-decorated room. The bed is comfortable, the bathroom is nice, and it has a small kitchenette that he stocked with coffee and a few other things. It is a comfortable, private place to stay for one or two people.
Paul was very kind and helpful to us, whenever we needed anything. He is a great resource for the city too.
The location is convenient. It is not right in downtown, but it is close enough to have quick access to all the sights. There is a Metro bus stop close by, and Uber can get you to any of the sights quickly for probably less than $10 (during non-peak times).
Over all, we thoroughly enjoyed our stay, and if/when we go back to DC, we will check to see if this place is available again.