Manuel and Alice provided a very specific description of the place for location (i.e. color of the door, buzzer instructions, nearby landmarks and easily identifiable neighboring stores and hotels). Once I arrived, Alex (who works in the building) was there promptly to give me a tour of the building and apartment and provide keys; also sharing nice touches like tour and restaurant information and snacks (which I ate promptly). More importantly, Alice responded quickly whenever I reached out and was always kind and informative. The one draw back: I am returning to Mexico City early next week for a couple of days and the apartment is already booked. I'll be sure to check for Manual and Alice's listings first for future Mexico City trips :)