The apartment and the building are nice, but it isn't in Polanco, it's in Granada. It's just to the north of Polanco and a short walk from the part of Polanco with shops and restaurants.
The apartment was clean and extremely secure, with many security staff around the clock. The building is very large and a bit of a maze, so you need to get help from security when you arrive to be shown the apartment. I found this difficult as I don't speak Spanish and my phone had no reception at the security booth.
The apartment itself was not the same apartment as in the photos. It was the same size and layout and identically furnished/decorated only inverted, but the one we stayed in has carpets. Not that big a deal but our impression when we arrived was that we didn't recognize the apartment from the photos and wondered if there had been a mistake.
We stayed for most of a week and did a lot of cooking. There is a supermarket right underneith the building which is very convenient. The kitchen wasn't very well stocked so cooking was a challenge. There are no large bowls or proper baking trays.