First of all, the pictures don't do this place justice. The flat is amazing and beautiful. We loved the layout and the master bedroom / bathroom was awesome! The location is great and it is an easy walk to restaurants and shops. There is currently construction, but you only need to go a black to catch an Uber. The neighborhood is safe and the people are very friendly. Julian has everything you will need.
On a side note, we had an issue with getting into the flat. Costanza was amazing in getting us help as quickly as possible - keeping in mind it was 00:30 in the morning. He was very responsive and we would've been lost without him. We owe him and please be sure to thank him for us.
The only thing to note is that the bed in the master bedroom is quite hard.
The beds in the second bedroom are much softer, but just something to note.
We had no trouble sleeping, but we generally prefer a firmer mattress.
Overall, we loved Mexico City and LOVED Julian's place. We will be staying here again, if he will have us!