Really nice spot in the Historic Center of Mexico City. Interior windows keep it quiet but do mean you won't have a spectacular view from inside the apartment. It's a bit bigger than some of the apartments in the same area that I looked at. Bed is on the softer side which some people prefer.
It's part of a large complex with all kinds of amenities including a gym, pool, and little store for essentials in the common areas. There are many towers with different elevators to access them, you cannot move between towers above the ground floor, this apartment is on the 8th floor of one tower and right next to the elevator.
While there are doormen at all the multiple entrances to the complex you need to arrange with Erwin to drop off the keys, it's not a self-check-in situations, so stay in touch; WhatsApp is probably your best bet for that.
Erwin was very helpful with anything that came up but we didn't have any problems anyways.