Norma and Javier's studio was perfect for me and my boyfriend. The apartment is located in a safe and hip neighborhood of Condesa. There were lots of nice restaurants and bars walking distance (5-10 mins) of the studio. There's also a doorman (Boni) who lets you in during business hours, who is extremely friendly and helpful.
Norma and Javier also sent over a list of recommendations and answered all of my questions prior to my trip. I would stay here again!