This place, and the host, were really great. Francisco knows all the cool spots for food, art, entertainment, etc. He is incredibly friendly and responsive and really made us feel at home when he gave us the keys. The home has everything you could need, even a large jug of potable water.
The building is very secure, with a doorman in the daytime hours. Better yet, it's just a couple blocks from almost all of the main attractions (museums, plazas, etc.) and has some fantastic restaurants all around. Will definitely come back here when I visit Mexico City again.