Estefania is a wonderful host who makes you feel at home both with her friendly attitude and home atmosphere. Nice smells, colors, and plants! The space gives a good slice of real life in Mexico City. This is not want some want, if you want to feel like a gringo go to Roma or Condesa :P Decent walking distance to the metro and can take a long walk to one of my favorite areas in Mexico City, Santa Maria de Riberia.
Some things to note if you want to stay here. As others have mentioned, you are on the fifth floor plus you are in a more residential area. Basically, you need to like to walk. Also, the immediate area is VERY local. There are things to eat and markets but not many non-Mexican options or nearby nightlife (fortunately the San Cosme station is the next one). It is also a local space not a hotel, personally I LOVE this as it feels more like actually living in Mexico City, but you should expect a bit or wear in the space and such.