I'm happy to share my positive experience after staying at this apartment for a full month (and will be staying there again for 3 weeks after a little trip to Veracruz).
Everything, from the communication with the hosts, to the check in and my stay were great. This apartment is great for tourists staying ffora few days or a week in Mexico City but it's also really great for long stays. The location is great. Close to the centro and close to the metro if you want to move around cheaply (I walked or took Uber). The building is very safe and has 24/7 security. The apartment is quiet and very comfortable. Hot water and wifi work perfectly fine. There's drinking water and gas available at all times too (rare in Mexico). The place is cute and spacious with lots of attention to details.
I highly recommend it! See you guys soon.