The host is very prompt and helpful. His wife came to pick us up at the nearest vaporetto station and walked us to the apartment. It's located above a few shops which is pretty quiet during the day.
We love the apartment as it is huge for 2 person. They have a living room, kitchen and bedroom separately. The kitchen is functionally so we managed to cook some noodles at night.
And it is walking distance (10-12mins walk) to St Mark's Square where most of the sightseeings of Venice are located. Everywhere is walkable and there isn't a need to buy a day pass for vaporetto/ferry around Venice.