Overall, I really enjoyed my stay at Martha's place. It's close to the Angel of Independence, and the space is quite large, easily hosting up to 3-4 people as the couch in the living room is quite lengthy as well and can sleep an additional 1-2 people. The one bed in the bedroom can sleep 2 people easily, and the mattress is quite soft.
The bathroom had enough hot water and was clean overall. However, the water pressure wasn't as great in all honesty. Also, there was no central air or any fan that I saw available. While it wasn't overly hot during my stay, I would have appreciated some cooler air.
Also, the photos made the apartment appear more homey. Frankly, it was kind of devoid of character. It looked so much brighter and trendier in the photos, but the apartment echoes a lot, and it is actually quite dark as the light it gets is all indirect.
With regards to communication, Martha herself is a great host. I was able to book the apartment the same day I wanted to stay. She and I were able to coordinate pickup of the key quite easily, and I was also able to leave the apartment and the keys without needing to meet up with her (which made my departure less stressful and more independent). Overall, I would recommend her apartment to others looking to have a pleasant stay in CDMX.