Paul, I would love to be in Chioggia in July, but in fact, I'll be in Istanbul. Give those shellfish a kiss for me. Thanks for the tip about the Garibaldi.
I do know the Madonna -- once we stayed right around the corner during Carnevale, in fact. I well remember the seafood risotto, especially. As for Patricia Wells, I believe she has a website. Her list was published in the Trib but maybe it's on her website.
My best meal lately was at the mostly-vegetarian three-star Arpege in Paris. I'm generally an Italophile (and I especially love good Venetian food) but this meal was Amazing.