This property is a family-run business on par with a small-town motel in the States. So, the carpet is worn thin, there's a lot of rambling corridors and quirks, but the staff is extremely nice and if you need anything all you have to do is ask them. Paolo and his wife Jacqueline are super sweet people that even gave the guests traditional cake for New Year's. I really had a delightful and memorable time here.
I stayed in the winter, in the five-bedroom room. You can book it as single-gender but the owner moves people around to keep the place full, so it became co-ed. Bit of a bummer, but he did at least try to keep reputable people in there together. (He mentioned that if anyone ever seemed disruptive or drunkenly, that he put them by themselves, which I appreciated.)
Each room is unique, with big wooden ceiling beams. The upstairs space was clean and there's a full kitchen, small eating space, and shared bathroom. It's a true taste of Venice, and the location is really good too--it's a neighborhood where real people live, close to the water bus and various museums. The waterfront has all the tourist shops you could need, without the crowd. There's groceries within five or ten minutes walking.
There isn't a desk in the five-person room, so just be aware of that. While the A/C was running, the air was fine, but if it got too warm, it smelled a bit moldy/musty. Probably inescapable in Venice, but I ended up okay even with my allergies, which are pretty sensitive. Hurray.