Claudia's place was really nice, it is in a brand new modern building, the furnishings are really nice, the apartment is very clean, (the bed is only a full, just a warning), the view from the public outdoor space on the 6th floor is beautiful, the gym is pretty decent but it does close at 10:00 PM.
I have three complaints, the first being the shower and hot water heater are hard to deal with, the temperature will change on its own from extremely hot to extremely cold, especially if you are using the sink and shower at the same time, its pretty impossible to get the water to a comfortable place long enough to take an entire shower.
The second complaint is not being given a card to enter the building and having to rely on security for getting in as they want to speak with you every time you enter, they don't speak English and I don't speak Spanish.
The third complaint is that the immediate area felt a little bit sketchy at night, there is a homeless tent on the sidewalk outside the building and homeless people on the corner, though the building like I said is brand new and has security, we felt safe in the building, we chose to Uber vs walking around the immediate area.
I enjoyed our stay, the building and experience overall was great. Claudia was a very good host, very responsive and she offered us many suggestions on what to do in Mexico City along with leaving us a nice treat in the fridge for our arrival. I would definitely stay at her apartment again, you will not be disappointed, if we go back to Mexico City we will probably stay and explore a different area though.