This flat is charming and good value, considering how expensive Venice can be. It was clean and exactly as described. The bed was comfortable and the shower was good, my two most important criteria.
The host, Isabella, was friendly and helpful from the start and quick to respond with how to get there. She met us getting off the water bus, which was great as it can be hard to find your way around Venice. She also gave us a map and talked us through the various areas, marking places of interest - it was very helpful.
One of the only negative things I had read in the review of this apartment was a complaint about the lack of air conditioning. There IS air con, but only in the bedroom. Due to it being a heritage building, it cannot be installed at the front of the building. Some might consider it hot in the sitting room (it was 27 degrees and we were fine) but you are unlikely to spend lots of time there and having it in the bedroom means you can sleep comfortably, which is the most important.
I would absolutely recommend this place. The location was so central, it was a perfect base from which to explore Venice. We had a fantastic time.