I enjoyed my stay at Cynthia's place.. It is a comfortable small apartment, that had pretty much everything I need. Most important things, a good bed, a nice shower and a small kitchen, with the washing machine as a bonus...
I liked Napoles, the area where the apartment is located. It has a lot of restaurants nearby and areas like Condesa and Roma are only a short ride by Uber or with the Metrobus. The Metrobus stop is 200m from the apartment.
Communication with Cynthia was excellent and she was waiting for me when I arrived. In case of an unforeseen delay, the key would have been in the lockbox, which is very handy, not to have to wait.
In short.. recommended!