Luz, what a wonderful woman! She was incredibly helpful from our arrival and spoke with our cab driver to make sure we got to her place. Travelers looking to use their Spanish and get a real sense of D.F. will find her house and neighborhood perfect. The walk to the Universidad metro is 10-15 minutes depending on your gusto, and while we never felt unsafe during day or night, we were advised to not walk home from the metro too late. Everyone in the neighborhood was so friendly and nice, and Luz's family owns a miscelanea across the street. Do note that the neighborhood, somewhat like all of D.F., is quite noisy at all hours, there will be cute dogs on the streets, and there weren't (m)any bars or supermarkets to speak of. Luz, muchas gracias por tu hospitalidad y amistad, y que todo les vaya bien a tí y tu familia!