The Ca'Donzela apartment was very nice, very clean and in an excellent location. It's very close to the Rialto Bridge and there is a market and several non-touristy restaurants in the area. Arelis was very easy to communicate with and check in was a breeze. There were six of us staying in the apartment for two nights. It has a room with a double bed, a room with two single beds, a room with a single bed that turns into a double and a living room with a sofa that turns into a double. It was very spacious and has two bathrooms, but only one shower. It was a little noisy in the morning as the merchants prepared the market for the day, but nothing too loud.
I would definitely recommend this apartment to anyone staying in Venice.