I stayed here for one month and there were positives and negatives. First, Ale is a great host, always available and answered my questions almost immediately. The area is excellent, right behind the St. Regis in Reforma so right in the heart of many wonderful restaurants, cafes, bars. You are a 5 min walk to Chapultepec park and 7 min walk to the subway. Ale doesn't manage the apartment itself, an older couple in the building took care of anything I needed like more towels, etc. They were always quick to act. The apartment itself is quite spacious as it's in a U shaped design. Most things were provided although it is the bare minimum as far as kitchen items.
The apartment itself has some issues that may or may not bother you. Inside it does not get any direct sunlight so the apartment is dark all the time, you need lights on no matter what time no matter how sunny it is outside. This also makes the apartment quite cold. I had to wear a sweatshirt and sweatpants at all times as anything less and I'm shivering. There is the open terrace which is nice but that is in the middle of an open shaft that all other apartments look into. That is the best source of light although that does not get any direct sunlight either. It is not a very well ventilated apartment, even with the windows open as again, it faces into that central shaft so there is not much natural air movement. As a result, the apartment was humid all the time and things never dried, I had to rotate two bath towels at a time as it took over 24 hours for one to get to semi-dry. Mold started growing on my things and in the kitchen and in the bedroom, you can smell the wet wood the closet was made of. It is also an older building so the bathroom always had a drain/toilet smell (common in CDMX) and as there was no real door to the bathroom, just slatted closet doors, the smell also permeated the bathroom. Also, even though mine was a long stay, cleaning wasn't provided (although enough towels and sheets were provided for the month). I don't mind if cleaning is not included, however, hardly any cleaning products were provided. Only a dirty broom and some floor cleaner but no mop which didn't make sense. It would have been nice to have had cleaning products provided so I could keep the place clean myself (I had to get my own). If you are only planning for a short stay it wouldn't be a problem but I don't think this apartment at its present state is suitable for long stays.
As it is an older building the walls are pretty thin so you can hear the neighbors and there is construction right across the street on a new building. The construction goes on at all hours, it doesn't stop for the night as I've heard them past 1-2 am. The apartment is far enough back that the sound is more muffled but you can still hear it. I had to use earplugs and white noise every night. As I said, 1 or 2 nights is fine if you don't plan on spending much time in the apartment, but for longer, some things will need to change in order to make longer stays more comfortable.