Myself and a friend were in CDMX for Dias de Los Muertos festivities, so we didn't spend much time in the apartment, and it served its purpose. Great value ($) for an entire apartment and plenty of space for 2 people.
The property is located a few steps from a major highway, with high walls and a gated entrance. So it could be loud at times, but we always felt very safe.
The hamlet of San Angel is cute, but definitely on the outskirts of what would be considered the center of CDMX. so being off a highway was convenient because it's the quickest way to downtown and other areas of the city.