Mario's place was just right for us, away from the crowds but just a small walk to bars and restaurants.
We caught the water bus from the airport to Ospedale which is 10 min walk to the apartment and very easy to find. Mario now has a key in a small key safe by the front door so I think this made it easier than having to meet someone
The apartment had everything we needed and it was lovely to drink a glass of wine with the windows open watching the boats on the canal.
So our experience was really good