Thanks again to Vern, a Hoosier in Venice, for sharing his photos and allowing me to post them here.
I wrote about Sant'Anna here; it's a crumbling deconsecrated church in Castello with a fascinating history. Vern noticed that the door was partially open and was able to get a photo of the interior. It's pretty desolate inside; you can barely tell that it was ever a church.
This church is no longer owned by The Church - it's city property and it's unlikely that the Comune di Venezia has the money to restore this place along with the many other dilapidated palazzi they own. They did restore the adjacent Sant' Anna convent which was turned into housing.
Some photos of the Sant'Anna cloisters are here.