Diego's place was amazing - better than expected and simply gorgeous with the massive bookshelf. It was easy to communicate because he was so responsive and provided great recommendations for neighborhood spots such as Eno, where we went for breakfast. Polanco is clean, lush and easy to walk through. The location is extremely central to where we wanted to be each day and there were plenty of Ubers. However, note the traffic can be very heavy and it can take an hour to get somewhere.
Note that there is a water filter next to the kitchen sink, so you don't need to buy bottled water, but it is still recommended.
Thanks so much for a wonderful first visit to CDMX!