Erika's place is easily reached from the airport by metro, which is in turn an easy way to reach the historical center, the bus terminals, and other parts of Mexico City.
The room is as nice and clean as a top-end hotel, even though you wouldn't expect it from the outside. Towels, soap, water, etc. provided.
Finally, as a host Erika was very helpful when we're learning to navigate around the huge city, as well as incredibly friendly.