I totally recommend you stay in this Airbnb. The unit is centrally located and gives you an authentic Mexico City neighborhood experience. The hosts are wonderful and, in our experience, went above and beyond to make our stay comfortable.
Perks: fast and reliable internet, 24-hour security in a safe and nice apartment building, ~15 min walking to main Reforma area, there's a great coffee shop a block away, awesome tacos across the street, and an artisan ice-cream shop two blocks away!