Excellent. I stayed here for two months and was very happy.
Carlos was an outstanding, attentive, and accommodating host. He worked with me and was very reasonable when I needed to make changes to my reservations. On his own he arranged to replace the couch when he discovered that a spring had broken. Included weekly cleaning service was outstanding. Purified water dispenser in the apartment. On site laundry. Very secure and safe with digital locks. Excellent wifi connectivity.
The apartment is meticulously clean, spacious, and convenient to most anything in the southern part of the city. Plaza San Jacinto, Museo del Carmen, and Frida & Diego's studios are all within easy walking distance. The Coyoacan centro is about a 30 minute walk. The San Angel mercado is literally 20 steps away, so you can cheaply and easily get fresh fruit, cheese, meat, or eat in the foodcourt. If you prefer American style grocery stores the Walmart in Patio Revolucion is 5 minutes away.
The apartment is a 5-10 minute walk to Insurgentes and the Dr. Galvez Metrobus station, making it very easy to get around by public transit. The metrobus is exceptionally cheap, just 6 pesos for a ride. The Dr. Galvez stop is one bust stop away from Ciudad Universitaria. Downtown areas (Roma, Condesa, Juarez, Reforma) are about a 40 minute ride on the MetroBus, which during rush hour is by far the fastest way to get around. In off peak hours, an Uber ride to downtown is very inexpensive (about $5 US) and takes about 20-30 minutes.
I'll also address a few of the complaints made by previous guests... Music... it is true that the clothing shop across the street in the mercado plays music during the day time. This is what comes with having a very convenient location nearby shopping and is. Based on my experience hearing music and traffic noise is pretty typical of travel in Mexico City. CDMX is a large, very busy city and noise is common everywhere. Myself I never found the music bothersome and playing my own music or turning on the fan easily drowned out the sound.
Some past guests also complained about hot water... I did not find the availability of hot water unusual or surprising. As in just about any apartment building, there is a limited supply of hot water and at busy times of day it can be used up. It also takes a bit for the hot water to reach the sink or shower, just like in my home. But when it comes the water is quite hot, and I actually needed to blend in some cold to shower comfortably.
I suppose that some people are never satisfied, but this apartment exceeded my expectations. If I were to stay in San Angel again I would definitely rebook with Carlos.