Gianluca's place is amazing. It is located in a great location, near Rialto bridge. It is very big, accommodating easily a family of 4-5 people or 2 couples.
We were a couple staying for 2 nights, for the Venice mask Festival. The kitchen is well equipped and we enjoyed cooking and eating in the dining room. The bedrooms are very big with enough closet space. Same goes for bathroom. (there are 2 of those, one smaller but main one is really big).
The host is great - responsive and accommodating, we got a map of Venice and recommendations on places and restaurants.
All in all - a great return for your money, we can't recommend this space enough.