Carmen was very prompt with communication before, and during, our trip. She answered our questions, and gave us great recommendations around the area. She even met us at the apartment when we arrived, showed us around the place, how appliances worked, and there's even a guide board on the wall, next to the front door, with everything you need to know, in case she cannot be reached right away.
The apartment is located in a friendly, quiet neighborhood, with lots of little shops and food places right around the corner, within walking distance. There are multiple locks on all the doors, for added security, and we never felt unsafe walking around the area, both in the daytime and at night. The city center, and other tourist attractions, are only a short (and cheap) 15-20 min Uber ride away. and about an hour to the Teotihuacan pyramids.
The interior of the apartment is very cozy, with an authentic Mexican feel. The bed is comfortable, the water is hot, and there are great little touches around the home, such as condiments in the kitchen, coffee/tea, lotions, bath products, a hair dryer, and after-sun care, which we were grateful for, after spending a whole day climbing the pyramids in the sun.
All-in-all, we had a wonderful stay at Carmen & Roberto's place, and we highly recommend it to other travelers that are looking for a true local experience. If we ever go back to Mexico City, we will most definitely be booking here again!