Carlos' apartment is perfect for one or two persons. It is a rooftop unit that provides nice views of the surrounding neighborhoods. The neighborhood is very safe with a police station just right across the building. I was able to walk mostly everywhere just fine even at night. Bathroom is a little tricky at first but it didn't bother me much. Carlos is a very friendly and accommodating host. He always checked on me to see how I was doing and also flexible with check in/out times. I will come back and stay here again the next time I visit CDMX!