The place has the best possible location, right in the center of Coyoacan, just a few steps from the church and the main plaza. Also the place is really quiet... you won't be bothered by the noise of cars. The place is best suited for a single person or two friends and you have to be fit because the stair to the second floor is very narrow and it does not have a good clearance if you are tall. It may not work so much for couples because there is not much privacy: The windows (no blinds or curtains) in the lower floor and the blinds upstairs are both see-through, I personally can live (a few days though) with this see-through situation, I have nothing to hide (or show), I just had to remind my wife when it was dark outside and the neighbors could see inside the bedroom with our lights on. Also, the upper floor is connected to the host's living area via a door that has no knob on your side. This is just informative, I cannot complain that much about this last point because my mom used to rent part of her house with a connecting door like this one, she would lean a mattress against the door and then some bookshelves against the mattress... I am assuming there is a similar arrangement here, behind the door, that's why it wasn't a big deal for me but that was not the case with my wife who was a bit concerned about it.
Last but not least, the bathroom was pretty good! Spacious, comfortable, and most importantly in CDMX, consistent hot water in the shower! I have stayed in other places in CDMX where the bathroom would take points off the whole experience, in this case it was just the opposite.
Almost forgot, there are two street addresses with the same number outside, after you are given the number make sure you find the one with the "Bis" word after the number before you call the door (it's not the one with a bell).
P.D. The Internet was good for what we needed, the most demanding thing was watching some videos on YouTube in our smartphones.