If you are looking for a beautiful, clean and spacious flat in a quiet location, but in easy reach of the key tourist spots then Marco's place is brilliant. We have stayed twice now as his flat is just around the corner from a gallery we were working with. There are loads of great places to eat in the location and you are within easy walk of most places.
Also the flat is only a couple of stops on the Alilaguna from the airport so relatively quick to get to the flat this way.
Would whole heartily recommend this very beautiful, modern flat, as rare find as they say :)