Patisseria Bar Rizzardini was recommended by my cousin and it truly is amazing. Standing room only for your espresso but then so many pastries to choose from. We stayed three nights and each day had our breakfast there. We returned in the afternoon of our last day --- a rainy day -- and the owner told us that they would be closed the following morning (Tuesday) so we bought two pastries each, saving one each for the next morning to have in our darling apt overlooking the rooftops of Venice. Highly recommend and so easy to find. Any restaurant or shopkeeper would be glad to direct you as well!