We've stayed at Marco's apartment for a few nights. Everything was as described and as in the pictures. Marco was not there to check us in, but his girlfriend was there to meet us. She picked us up from the boat stop and showed us the way to the apartment which was very nice. They had a bunch of local recommendations for restaurants and other things to do in Venice as well. The location is great as well. In just a few minutes you are in the center of Venice. Marco was very quick to respond to messages.
I can totally recommend staying here.