First, Anna was immensely welcoming and helpful. She met us at the water-bus pier, reassured our daughter and walked us the short distance to the flat. She was friendly and gave us good advice about the area.
The location is excellent, even for mobility-constrained people (we had a heavy baby buggy which was foolish given the number of bridges). It's a ten minute walk from the Rialto and twenty minutes from St Mark's square. Nearby are a supermarket and some solid restaurants, though expensive as usual for Venice.
The flat is on the second floor of an old building, which I believe Anna owns. Inside, the décor and fittings are pleasant if aged. There are random curios dotted around the walls - a treaty from the second Cisalpine republic, strange drawings - which give the flat an unusual air.
Overall, a central and convenient base from which to explore Venice.