We stayed here for a full week, and this is hands-down the best place we've ever stayed in Venice. Between my husband and me, we've visited seven times and no other AirBnB comes anywhere close.
The space itself is wonderful: astounding views of the Grand Canal, comfortable beds, wide-open bathroom and kitchen, marble floors, natural light for days. Plenty of hot water, several options for making coffee, decent wifi, extremely communicative and responsive hosts. We would absolutely stay here again, no question.
The location is arguably even better. Step out the door and you are literally seconds from Rialto Market. (You can somewhat smell the market from your bedroom, which didn't bother us in the least but might be an issue if you're particularly sensitive.) Famous bacari like Do Mori and lovely breakfast spots like Farini are like a two-minute walk. The calle where you'll be staying has a few convenient small shops and tourist-friendly restaurants, and leads to Antiche Carampane, one of the best restaurants in the entire city. And for night owls, Bussola, one of the liveliest night spots in the city, is just past the market.