Our stay with Eliana (or Adriana who we met) was ideal.
Adriane met us - as prearranged with simple and reliable WhatsApp messages - at the Vaparetto stop (San Angelo) and guided us through winding lanes to the flat - only a few minutes away. After a brief introduction to the flat she also gave us a short tour of the area so we could get our bearings and ask questions about the nearest supermarkets/ restaurant tips etc.
The Wlan worked without problem - not always guaranteed, despite what is sometimes claimed and the flat is exactly as it is described. The highlight for us was the spacious roof terrace which we enjoyed enormously for drinks and meals after tiring days at the Biennale. The well equipped kitchen meant we could shop at the market and cook our own meals which offset some of the costs and meant we weren't reliant on the thousands of tourist restaurants which may not be bad, but certainly aren't all particularly good.
The flat is well placed in the heart of Venice, almost equidistant from the Rialto and St Mark's Square but nevertheless very quiet.
In the interest of balance, I'm trying to think of some drawbacks, but nothing occurs to me.
We would not hesitate to stay there again.