My boyfriend and I just spent a great week staying in Claudia's apartment. The studio is actually much nicer than it appears in the photos. It was immaculately clean, with beautiful views out the 14th story windows. Helicopters would land occasionally on the neighboring hospital's roof, much to our delight.
The building has many nice amenities, including a small gym, which I used several times. There is a decent restaurant in the lobby, as well as a Walmart grocery store in the building's basement level. (Unfortunately, it was too cold to use the rooftop pool!) If feeling safe is an issue for you, I can't imagine a more secure feeling location--this building has 24 hour security.
If you're looking for an authentic Mexico City apartment that gives you a taste of what it is like for a local, this is not the place for you. I knew that going in. Mitikah, the complex where this apartment is housed, is in close proximity to Coyocan, yet feels like an island to itself. The building reminds me of the amenity-rich condos and luxury high rises that have become popular in cities across the United States, not the other apartments I've stayed in while visiting CDMX. My boyfriend is currently dealing with some ongoing serious medical issues that usurped our plans on a couple of days, which is why staying in this building--with all that it offers--made more sense for us. I'm glad we chose Claudia's place.