Very nice apartment at Colombia Heights - I attended a conference at the nearby Hilton, which gave me quick access to the place. The room was very clean and the water bottles provided by the hosts was a nice touch. You can hear some traffic from the street during the night but I was so tired that it didn't really make a difference. Although you stay with the hosts (they are in the next room) - they were super considerate - the whole experience was very peaceful and quiet.