Humberto’s place is great! We really loved the location. Condesa is a great neighborhood and really easy to get to the historic center and Coyoacán (we used Uber to get around and it costs a couple of $$ to get to places). Lots of restaurants, cafes, shops nearby. The apartment was sparkling clean with really cool decorations and books (giant Diego Rivera book that was fun to peruse before seeing the real thing). There were 4 of us staying there and there was plenty of space. The king (or maybe Cal king) bed was super comfortable. The check-in process was also really easy (Humberto met us as soon as we got out of the taxi and gave us keys and a short tour of the place).
I would definitely stay here!