I recommend Bjorn Lorenzo's place. It's small, but has everything you need, kitchenette, very comfortable bed, and lovely good shower. All was very clean and tidy. The location is pretty good too, just off the main street - Strada Nuova in Canareggio. Fairly close to Rialto. It's quiet too. I was alone but it's excellent for a couple. The price is reasonable. Bjorn is a nice guy, speaks English and is very helpful. I would not hesitate to stay in his studio apartment again ... in fact I do hope to visit again. Venice is so beautiful ... so maybe next time I will go for the Carnevale.
R Pisani