We had a great experience.
I read the reviews before renting, and re-read them before writing mine. I fully agree with prior renters. The place is as shown in the pictures, the location is excellent, and Marcela is a superhost. She promptly responded to some requests we made upon arrival, fixing what needed to be fixed. The one thing that could be improved in the apartment is the washing machine, that takes a very long time to wash and dry a small load.
The apartment is located in a quiet street. Security at the building is good, and the guards are very polite and helpful. For a quick bite, next to the building there is a small eatery that sells typical Mexican fare for breakfast and lunch (up to 5:00 pm), and offers carry-out. Also, there is an Oxxo store about block-and-a-half away. Plus there are many restaurants in the Polanco area, accessible by foot or Uber, that can satisfy the most sophisticated palates.
We definitely would return to Marcela's apartment.