the house we rented was VRBO 307081. It's pricey, but everything in Key West is. It's usually rented by the month but we negotiated a price for the open days between the long term rentals. It's not really a detached house, it's more like the end unit of 2 1/2 story row houses. Facing south with the pool in the back (north) and with all of the landscaping to make it private, the pool got little sun. But it was private enough to be nude in and out of the home. If the people next to you were on their bedroom deck on the second floor, they could see into your pool. They never were but we really didn't care either way.
We did walk into Marrero's to check out the pool. Very small and limited sunny spots but would certainly work. They just didn't have a poolside room available for our entire stay.
Bottom line, I'd still look for a better VRBO rental with a private pool that gets some sun. If nothing else, we'd return to this one, but there has to be better.