Thank you Hillary.
It was an excellent stay, although it was brief. I reached around 11 pm and checked out the next day. She was quick to reply to all of my queries and was of great help. Her room is exactly as she has described. Bed is very comfortable and I had a very good sleep.
The house is in a residential area, near to Metro, about 1 kilometer distance. Metro buses do run at the end of the street. Since it is in a residential area, so not many grocery stores near by.
Overall it was an excellent stay. If I come to Washington DC alone in future, I will live at her place again.