We LOVED this place! It was centrally located with many great places within walking distance or just short uber ride away. It was very safe, even for a paranoid gringo. There are security guards at the building entrance and I, a single mom traveling alone with two kids, felt perfectly safe walking alone at night on quick runs to the market. And, the host is very responsive (in English or Spanish), no matter how dumb the question!
Mexico City is heavily populated and busy city so, no matter where you stay, you might want to bring ear plugs if you're a light sleeper.
Hope to stay here again someday. We fell in love with the people and history of Mexico!