Wonderful apartment. Slightly bigger than it appears in the photos. Hosts are wonderful and communicative, the location is right on the edge of Condesa. I am not a person who is bothered by noise, so I had zero problems with the noise, however if you are working from home with conference calls and wanted to keep the window, it would be impossible.
Everything is as exactly as described in the reviews. My only complaint is that the apartment is slightly cold. Mexico City can be quite cold at this time during the year (Dec) in the mornings, but somehow the apartment does not heat up when the temperature rises in the day. There is a space heater, but it needs to stay close in order to keep you warm. This would not be a problem when staying in non-colder months.
Overall, would highly recommend. Great value for money, spacious, and peaceful despite the noise.