The apartment at the WTC Residential is very comfortable and very, very secure. The grounds are very clean and nicely kept. The staff there is very friendly and helpful. We arrived at 2 am and were helped all the way to our door. The apartment has an electronic combination key lock which is helpful. Our host didn't have to stay up waiting for us to arrive. The beds are comfortable, the restrooms are spacious with a good water pressure and all of the floors are very clean. We didn't use the kitchen much as we were eating out all of the time (It's Mexico City! Go out to eat!). I was able to communicate with our host a few times throughout our stay and he was very quick to respond and help. We enjoyed our stay and didn't have any issues with the apartment whatsoever. Everything worked well. Thanks Fernando.