Brilliant location - five minutes from Accademia, which means it's easy to walk from the house to St Mark's. Also very easy to pick up boats from either Zattere or Accademia, so it feels very connected. The various bars and pizza places along the waterfront are all pretty good with friendly service and the food is reliable. But really, really worth checking out Osteria Al Squero on Fondamenta Nani, just before the first bridge along the waterfront - fantastic cicheti which you order at the bar and eat outside.
The house was comfortable and we were grateful for all the towels Betti left us.
It was very, very hot and as someone else has commented, an extra fan would have been really useful, also some drying racks for clothes as we needed to wash things regularly (the heat!)
Otherwise I would certainly recommend Betti's Place - comfortable, relaxed and a brilliant location.