I just spent six weeks here. It's terrific. Some notes:
1) There's a kitchen but no dishwasher or stove. I would recommend eating out instead, because there are about a thousand terrific cafes, restaurants, and taco stands in the neighborhood. No reason to cook. I recommend Cafe Nin directly below. I ate breakfast here every morning for forty days. It's really terrific.
2) Street can get loud, so bring earplugs. The cafe below opens at 7 am. There are street musicians (some great, some bad, some loud) who like to play, and you'll hear them.
3) If you're the type of person who really needs a big television in the living room and comfy couches, this is not the place for you. The couch is a futon (not super comfy) and the only TV is upstairs, about five meters away from the bed. I didn't turn it on, not even once, preferring to watch Netflix or Amazon on my laptop.
4) Yes, the shower is as good as everybody says it is.
5) There are no screens, so close the windows at night or else the mosquitos will get inside and eat you alive in bed all night.
6) The wifi is great but it's not the kind of apartment you want to work out of.
7) For a very, very good taco stand, turn left out of the building, then turn left on Liverpool, and go down one block, past the 7-11. You'll see it. Those boys know how to throw down: 5 tacos for 35 pesos (about $2 US). Get the suadero or al pastor. I ate there three times a week. You won't get sick.
8) Don't order any 2x1 margaritas on the street or you WILL get sick. Don't ask how I know.