I liked my nearly 2 weeks stay at Mercedes's (with whom I communicated all throughout). She is a really great and helpful host. She also accommodated a request I had about lighting in the room and replied fast to my messages. She also had an extra cleaning done about half way through my stay which I really appreciated.
I highly recommend her as a host.
The place, although kinda small for the price (unless patio is really what you're looking for), is very clean and organized. The patio is good and a big + (for sure counted into the price). Location is awesome, there is a 7/11 right across and many clubs/bars/restaurant a few mn walking distance. It's a nice unit in a very safe neighborhood of CDMX! (lots of cameras and police patrolling)
The main reason why I'm giving 4 stars is because the apartment gets super hot during the day, even though outside there is a nice breeze and it's kinda cool. The sun hits the (metal or steel) ceiling of the apartment ALLLL day from sun rise to sun set and makes the place very hot, like 35 degrees if not more! If you're young and/or outside during the day most of the time, it's fine, but if you need to stay in to work (like me), or are pregnant, older, have some sort of medical condition etc, you need to be aware of this.
And yes it is kind of a hike to get to the unit as others have reported. There are like 3 sets of stairs + a last much narrower set (my luggage could barely fit) to access to the rooftop. The first night I really had a hard time with my 22 kg luggage + heavy bag pack after a long flight. Also be careful to not walk/trip on the water pipes all throughout your way to the unit. You need to use your phone as flash light because at night, there's barely any light up there.
But hey that's the price to pay to get a rooftop patio ;)