John was very helpful and answered my questions quickly via the app. Arrival was hassle free, met by a guy at the door (not John) who knew who I was and took us up to the room and gave us the key.
The apartment is nice and comfortable. A good, well designed space, handy kitchen and location. Downstairs is a nice cafe (Closed on Sunday!) for coffee, tea, cakes, and they do a small selection of food, including pizza and a few things suitable for breakfast.
All in all a great place to stay - if I could change anything... probably have a more powerful shower and a bigger water tank as you don't have enough water for two to shower after each other, but it's not a big deal at all. I'd stay here again if I ever return to Mexico City.