This apartment was fantastic - the space was very clean and well-decorated, the amenities were well-kept, location was very secure, host was very responsive to messages, and the neighborhood is very nice with lots of options nearby. Because the neighborhood is a little busier than some, there is some noise at night, but it did not bother any of us staying at the place and ear plugs were graciously provided by the host (but we did not even need these). The three floors are somewhat connected in that there are no doors separating the floors, so that is worth considering if you have a significant need for privacy, but again, we had no problems with this either.
Overall, we were very happy with our stay here and would happily return when next in Mexico City.