Edith's AirBnB was better than the pictures and descriptions could have provided. From the photos, the place does not look like much, but once you step inside, it's furnished perfectly and has all the amenities as described.
Finding the location was not a problem. Uber took us there from the airport in about 30 minutes (moderate traffic). Edith was there waiting for us, with her husband, and she was very polite and really just a sweet person. The space is big. Ceilings are high and the rooms are spacious. The room with the twin beds probably has as much space as the master bedroom + master bathroom. And comparing most of the city's spaces to this apartment, we really had tons of space. Ironically, the hallways, stairwell, and elevator in the building were cramped (like most of the living spaces in Mexico City). But that's okay.
The apartment was right next to a bus stop that could take you to Antara (5.5 pesos for the bus = $0.25), and walking distance in the opposite direction to Liverpool (both are shopping malls).
All the beds, including the futon, were very comfortable, and the sheets were high quality and warm!
One thing that really impressed me about the place was that Edith left a few snacks, some water, and two small juices for us to have as sort of a housewarming gift. That was really thoughtful and a great touch.
Besides that, we didn't have any issue with the apartment, nor did we have any issues with communication. Edith was very proactive and responded to our messages within ~30 minutes. She also was very flexible with the check-out time, which allowed us to explore the city a bit longer instead of having to worry about where to keep our bags on the last day we were there.
I would definitely recommend this apartment for anyone coming to visit DF/Polanco area in the future. Edith is an amazing host. 10/10.