Latest review over on TA has a guest being upgraded to a SunWV. Pretty rare occurrence. From memory I've only seen one other review there where guests were upgraded to a SunWV. This one was for a few nights, too.
Here's the excerpt from
jlh67's review
We were upgraded to the Super McDaddy Sunset Overwater villa for our last few days..
I think I'll PM her and ask her which one she got and for how many nights and report back.