My boyfriend and I stayed for a week and felt like home. We arrived at 9am and the room was ready for us.
Carlos was very attentive and answered all my messages quickly.
The location was perfect as I had to go everyday to UNAM, it's only 20 minutes walking distance.
There is coffee, bread, water, microwave and washing machine available, which was fantastic to facilitate our routine during that week. The two ladies that work there are very polite and helpful.
I highly recommend Carlos' place.