Andres's place is a perfect stay for someone that really wants to travel around the Mexico City. The place gives you just what you need after a long day, it is very clean, very nice and modern, it has a nice little fridge and you could even cook a small meal there. The best part is the nicest little terace on the top with little lights which can be a perfect ending of a day of exploring the city. The check-in process is all "self check-in" so maybe it takes a bit more time in the beginning, but when you've done it once it's easy. Only thing I would agree with previous comments is that you might have some problems if you are carrying big suitcases because there is not much of operating space in the entrance and stairs, but it is still possible.
Overall a 5 star experience!