We stayed at Cristina's place for two months, and our stay turned out to be excellent. The apartment is located in the heart of Condesa, and it has beautiful surroundings and a lot of good restaurants and bars nearby.
The master bedroom was very spacious and comfortable, and while we did not use the kitchen much, it had everything that was necessary. The highlight was definitely the amazing rooftop terrace, which is very spacious.
Cristina was always extremely helpful and very responsive to any questions we had, and it made our stay a lot better.
Our only complaint would be the living room situation - the sofa was not very comfortable, and it does get fairly hot in the living room and second bedroom upstairs during the day.
Otherwise great stay, and highly recommended!