My two daughters and I spent 4 days in DC.
We enjoyed the apartment, it was pretty cold though.
The shower is great, the beds are comfy and the kitchen was clean.
You need just about 9min to drive to the downtown. I actually booked for my wife and my four girls, but I’m glad that we rearranged, because the apartment is definitely too small for 6 people.
So, overall it’s a good apartment to visit DC with about 4 people.