I had a wonderful experience staying in Sylvia's apartment. The apartment itself is very nice, clean and spacious, as seen in the pictures. The location in the Condesa is excellent; tons of great cafes, coffee shops and restaurants within close proximity. Area felt very safe, plus there's a 24 hour guard/doorman. I did not meet Sylvia, but Anahi (who only speaks Spanish) was very nice and helpful. You can hear traffic noise from the street at times but it never bothered me. On a Friday night some neighbors in the building had a very loud party until past 4am (not Sylvia's fault), which required earplugs to sleep. Also note that there is no access to laundry facilities in the apartment, building or in the immediate area, which is not ideal for guests staying longer than a week, as I did. All in all, I highly recommend this apartment and would gladly stay here again.