I don't believe you can choose a better place to stay. The apartment is absolutely beautiful and well appointed, located in one of the most architecturally interesting parts of Mexico City. Its location is convenient to restaurants, bars and public transport.
As a single traveler I found the building and it's location safe and secure.
Pablo is a magnificent host! He is interested in his guests and interesting to converse with. He made me feel at home, provided me with restaurant recommendations and made sure I enjoyed my stay.
I cannot recommend this host and his apartment highly enough.