My experience with Karina and Armando as hosts couldn't have been better. Firstly, they were very understanding about my -somewhat inconvenient- logistics, and let me drop off and pick up my luggage before and after check-in and check-out times. Secondly, they were very welcoming by letting me join them for dinner and a cup of wine on the first day, and making conversation when we all got back from work during the rest of the week. Last but not least, the location of their apartment is absolutely unbeatable. I would absolutely recommend staying with them during your next trip in Mexico City.