Johnsmith writes:
6. No Sheraton Promise--Given that this was a poor stay, I would have expected more than a blank stare after explaining this to the front desk and cancelling my stay for next week
I don't think the Tuscany would fall under the Sheraton Promise guarantee. It's a "W" property and the promise is only for Sheraton properties.
Sorry you had a bad stay. As a Platinum I would write SPG and see if they could do something.