My family and I had a wonderful stay in Washington D.C and that was mostly due to our AirBNB stay. The apartment was ready as soon as we arrived. It was clean, well prepared with amenities and goods and was the perfect size for our stay. With a queen bed in one room and two singles in another we were able to easily accommodate four adults. The apartment also included a baby crib and high chair, which saved us from having to bring our own for our son. The TV included FireTV for easy watching, the beds were very comfortable and the kitchen was the perfect size for making quick meals. The kitchen included all the pots, pans, dishes and utensils to make our meals and the host was kind enough to have coffee, creamer, tea and other basics available. The shower came with shampoo, conditioner and body wash. Basically, it was just like being in a very cute hotel suite.
The location was also good for access to monuments and museums. While you couldn't walk to them, the drive was never very long. The neighborhood around the apartment was very cute (some beautiful houses) and there is a small convenience store just on the corner of the block to grab drinks and snacks.
Finally, the host was very nice and responsive. He was very quick to respond to all our questions and was always reminding us to reach out should we have any problems with the apartment or our stay.