This was a perfect place for my family to stay in DC! We could either walk or take a quick uber ride to much of the mall area, so we had easy access to most museums and monuments. There were also a lot of really good restaurants nearby.
The apartment was exactly as advertised, though I did make sure to confirm which building we would be in, as other reviewers suggested. It is a standard corporate apartment, so it was really nice to not have owner's knick-knacks everywhere. AC worked perfectly, and the apartment was stocked with all the amenities like toiletries, dish soap, and a single-use washing machine soap. The wifi didn't work when we arrived, but the staff was very gracious and got it resolved. I will say that the 24-hour line doesn't seem to get its voicemail checked, so I would call back first thing in the morning if you have an issue.