Great location, felt very safe. the apartment is 5 floors up, so be mindful if you have issues with stairs or heavy bags but it pays off as it's quiet and you have access to the shared terrace. We never saw any other guests so felt like we had the place to ourselves. The apartment had everything we needed for a great and comfortable stay and the bed is SO comfortable!
The apartment is not far from the metro-bus either, which is the best way to get around CDMX. We used ubers in the evening to get home, but felt safe to walk around the area as well. She also leaves some handy tourist tips at the apartment. I will stay again, thanks Karla!