We stayed in the apartment for one month and it worked very well for us. It is located in the middle of the city, close to the metro, plus only a short walk from Chapultepec Park. It is easy to walk to restaurants and to the small, but well stocked, grocery store. The kitchen has the basics that one needs to prepare meals, even an oven.
The location does bring with it street noise that travels into the bedroom, therefore sleeping with earplugs was a necessity for our stay. The bed was nice and firm, however smaller than a queen size, so it took a little while for us to figure out our twisting and turning :).
WiFi was strong and consistent, even after the earthquake in September, and the building seemed to have held up okay, with minor damage.
There is someone at the reception 24 hours per day and we felt very safe walking around at night.
Look forward to coming back one day! Thanks Maria!