I would say that this place has some positive and negative aspects. To start with the positive, Javier is a very good host. He allowed us to check in early, communicated very well, and provided us with a very useful guide of Coyoacan. The place itself is very well-located in Coyoacan, quiet and spacious.
The negative: when we arrived the bathrooms were very dirty. But we communicated with Javier about them and he cleaned them right away. The house could benefit from some lamps, as the overhead lights are quite bright and harsh. Some areas of the house still feel like they're under renovation. There was a ladder left in the front hallway, and exposed wiring in some places.
But in general we enjoyed our stay.