I spent two weeks at Denise's apartment. She wasn't living in the house during my time there but we spent some time together nonetheless. Denise was very friendly and welcoming. She even picked me up at the airport. The communication with her was very efficient. I shared the apartment with her current roommates, they had the room mentioned above and I had Denise's room. The room and the house are very functional and it's pleasant to live there.
The apartment is not downtown but it's close to transportation. There are buses running at the corner of the street that will bring you to the metro. It takes a little more than 30 min to get to L'Enfant Plaza station. Overall, I had a great stay.