I spent 4 nights in the house with my girlfriend. Good place, relatively near to the train station and the stop for the bus that takes you to/from the airport. If you're carrying luggage, mind there's quite a few bridges you've gotta cross before getting there.
The house was very organised when we got there, and check-in went smoothly.
The only drawback for us was the breakfast. From our experience, it seems that the fridge is provisioned when new guests are about to come up, since we had brioches, bread, jam, two small juice boxes, biscuits and coffee/tea when we checked in, but only bread, biscuits and coffee/tea until we left (we stayed for 4 nights). It's only a guess, though, based on how it went for us.
In general, it's quite a good place for the price, given how expensive can staying at Venice be, and I certainly recommend it.