While I chose Elena's apartment mainly based on the location and price as I wanted to be close by to friends living in Polanco, I would recommend this listing for anyone visiting DF. The apartment is huge and beautifully decorated with one of the comfiest Airbnb beds I've experienced. There is a day bed so the apartment is more than sharable between three (especially since you have a large living room area). From Elena's place, you have all of Polanco to explore on foot, or it's a short Uber ride (less than $4 USD) to Roma/Condesa, Juarez.
Only small thing to be careful of is that this apartment faces the busy street so if you are not used to city noises, bring ear plugs. We are all from NYC though so it was actually kind of nice to have what we consider "white noise".
Elena was very responsive throughout the whole process and check-in was super easy. Am recommending this listing to friends who are visiting Mexico City later this year!