My wife and two kids (5 & 9) spent the week of July 4th at Cathy and Bruce’s place and it was perfect. Great location that’s ~1 mile from the national mall and close to plenty of hip restaurants down on H street. I’m not sure I’d recommend the place for four adults as the bathroom is a bit on the tiny side, but for a couple or a family with small kids (like us) - it’s perfect.
We mostly used Uber to get around and it was usually under $10 to get to the things we wanted to see (Newseum, Air & Space, Lincoln Memorial etc.).
Also - Cathy was super responsive to any questions we had, which were few.