Alan's place is absolutely fantastic! Stayed with husband and mum for 3 nights and we all loved it.
Location is convenient, close to metro and bus to the national mall, there is a big supermarket and some restaurants within walking distance (Alan's instructions are spot on). Quiet neighborhood.
Flat itself is well equipped with everything you need! Mum slept on sofa bed which is absolutely fine. Check in/out was easy.
Would definitely love to stay at Alan's place again if we come back to Washington.