I stayed at Ammar's apartment for a week long work visit and loved my stay. His apartment was great for remote working, with multiple areas to comfortably work from (plenty of room for two people working from "home") and strong/secure WiFi. While I stayed for work, the apartment would also be great for two people just visiting the city for leisure.
I thought Ammar was very kind and communicative, and his apartment was very clean and as depicted in the online photos. The apartment is spacious and there are all the necessities in the kitchen you might need to cook a simple meal.
The apartment is also close to many restaurants and bars as well as the DuPont metro stop. I loved Bethesda Bagels, Zorba's Cafe, Sufeside Tacos, SweetGreens, Teaism, and La Tomate. It is a great neighborhood to visit and Ammar's apartment is really in the middle of it all.
I commuted downtown everyday and found it very easy to navigate the city from Ammar's place. It is a longer walk to downtown, but enjoyable on a nice day. It is a very short metro ride from Ammar's place to the main "tourist" attractions in DC, so the flat is very convenient. I would happily to stay here again and would recommend this place to anyone visiting the city.