Abraham is a great host! He's incredibly flexible when it comes to check-in/check-out times and he's there to answer any of your questions.
His place is a reasonable walk from centro. The area feels very home-y. The neighborhood and the house itself feel like real Mexicans actually live there. My family is Mexican, and I feel comfortable in that environment so to me that was a huge plus but it might be a little surprising to some people less accustomed to the remodeling ingenuity and improvisation of some Mexican homes.
The place is also incredibly affordable for big groups with rooms on rooms on rooms.
Overall GREAT stay!