It is clear that Roberto has a great sense of hospitality. He was very welcoming and his place had everything we needed (and even things we hadn't thought we would need). It's a beautiful old but completely renovated apartment in a charming building.
It is located in a very hip neighborhood with lots of trees and lovely old buildings everywhere. There are plenty of cafes and restaurants within walking distance.
I would definitely stay there again if I ever get a chance to go back to Mexico City.