Host-
Really friendly host
The home-
Understand that this unit is VERY small. That being said, it's also incredibly well laid out and we were surprised at how roomy it felt. We were three adults staying there and felt like it was plenty spacious with the sofa-bed folded into a couch for the day.
Bathroom-
It's pretty tight and my only complaint was that my legs were too long to fit properly so I had to use the toilet sitting sideways. But it wasn't even inconvenient enough to remove a star from anything. Note that the bathroom walls do not go quite all the way to the ceiling so if you are a shy bathroom user you'll have to learn to get over it pretty quick.
Washer/drier-
A freaking godsend. It was a little tricky to figure out how to use but a little help from google cleared it up.
Kitchen-
Both smaller and better than 90% of places I've stayed. But in this neighborhood I can't imagine ever really needing to cook your own food.

Location-
You literally can't ask for a better location in Coyoacan. A great cafe/coffee shop is right across the street and everything else you could want is within a very short walking distance.