When I went to Orlando three years ago I rented a villa through one of these websites
http://www.google.co....=&fp=2f2735407041c2ff
When I found one I liked and had contacted the owner my husband, who was a bit sceptical, googled the owner and found that they had their own business and seemed genuine. We knew the villa existed as we had stayed on the same sub-division (estate) a couple of years earlier. Every thing was fine, the villa was where they said it was and was great.