I stayed at Marco's place for one night when arriving in Mexico.
The apartment was easy to find and the check in was simple.
The room itself was clean and tidy, quiet and had a comfy bed.
Marco was helpful with places to see and go eat. The apartment is close to lots of shops and restaurants.
I would highly recommend staying with Marco.
(a small note: The apartment is on the 4th floor with no elevator. Keep this in mind if you have a lot of luggage!)