My husband and I stayed at Thang's place with our 5 month old daughter. We stayed for 4 nights. We were extremely comfortable and enjoyed our stay! Everything was clean and we loved that there was a lot of space to store our things. Thang was very friendly and helpful, and when a smoke detector was out of battery, he was quick to change it out for us. We also met his dad, mom, and sister, and they were extremely friendly and sweet to us, too. They even let us store our stroller downstairs in their living room so that we didn't have to carry it up the flight of stairs to our room.
The location of Thang's place is also really convenient. The Petworth station is on the yellow line, the same line that the Reagan Airport station is on, so it makes it really easy to get to his place when you fly into Reagan Airport! (Especially when you arrive at 10pm and just wanna get there to shower and rest!) It is also really convenient to get to lots of places you'd want to visit like the National Mall, White House, Arlington Cemetery, Georgetown etc. The walk from Thang's place to the metro station is a mere 5 minutes, and on the way there is a Safeway where you can buy snacks or breakfast, and a Dunkin Donuts to buy coffee or breakfast.
I would definitely stay at Thang's again! Thank you for a wonderful stay!