Both Carlos and Jonathan were VERY easy to communicate with and Jonathan was quick to offer to help with an issue I had with the Apple TV (completely my fault for not plugging it in!).
The location was good with just a 10 mins walk to stores and it felt very safe in the building. There is a lot of construction in the Polanco area so just be warned it may be noisy (I had a crane at the same level as the apartment).
I stayed here for two weeks, which felt a bit long for what was provided in the place in terms of the lack of laundry detergent, number of pots and pans, cleaning supplies etc. Cleaning wise - there was some dust and marks on the walls (looked like wine maybe) when I arrived, but nothing major. The bedding was also somewhat old feeling and I would have preferred newer stuff. That being said, I would recommend the place to stay, just maybe not for as long as I did.