Thanks for the note. How on earth did you know I studied/toured Venice??
Architectural histories of Venice are a dime a dozen. I’d try to get into the heads of actual Venetians. Also, there is a firm that is hired exclusively by the city to maintain the canals and piazzas. They mostly do stone-work-restoration and are experts at it. Sorry, but the name slips my mind, but you can google around. What’s interesting about their firm is that they document the processes very precisely and publish it on line with movie clips and very visual reports.
Some quick recommendations:
Italia Nostra’s study on Venice is good, but you’ll need translation.
The Venice Ministry of Culture (can’t find the link, might be Rome MoC or Italy MoC).
And of course UNESCO’s Venice Office has ultra-high quality reports.
Cheers and keep in touch!