Lilian and her friend Hortencia were super helpful and responsive, you are in good hands. The place itself looks just like the photos and was clean and ready for us when we arrived. The area is full of restaurants, shops, and really anything you could want, highly recommended.
We had just two problems that were with the building, not the apartment.
(1) You need a key to get out of the building; if you're is in the apartment without the keys you can't leave. Nor can you buzz anyone in -- one of us and a delivery guy looked at each other helplessly until another resident showed up and opened the door. Two sets of keys would avoid these issues.
(2) The elevator is wonky, you can't tell what floor it's on and it's possible to open the ground floor door when the elevator isn't present, which then disables it. We had to climb six flights on a few occasions.
Apart from these issues -- fantastic and recommended.