Lorenza, Mercedes and their mother Karen were extremely helpful in helping me with the accommodation, especially as I came right after the earthquake. Although I had booked a different room in the building, they gave me the option of staying in this apartment, which was a little big bigger and nicer than the one I had booked previously.
Karen checked in on me every day by phone, which was really appreciated. I had also had a problem on my first day with a key for one of the doors, but Karen got someone to give me another key not long after, which made it easier to come in and out.
During the day, it can get a little noisy outside the apartment between the workers in the building and some of the neighbors going in and out (the apartment is next to the garage where they sometimes do a lot of work). However, it was pretty quiet at night so it wasn't too hard to get a good amount of sleep.
Also, if you book the apartment, make sure you understand their system of opening and closing the doors. One of the other tenants had to explain to me their unique way of using the key to get out of the building.
But once you get the rhythm of it all, you're a Mexico City resident, just like everyone else! Gracias otra vez Mercedes, Lorenza and Karen!