Location : Perfectly convenient in a quiet Venice area. 10-15 min away from Plaza San Marco (if you don't get lost!)
Noise : Not an issue. Or at least no more than in any other place of Venice. The vaperotto station is really close but that's not an issue
Communication with owner : Perfect. We were welcome at the appartment entrance.
Appartement : Basic but perfectly fine. View
So why only 4 stars ? Only because a shutter in the sleeping room can't be closed. So you have light coming into the sleeping room quite early in the morning. Not a big deal nevertheless.