I just finished a pretty exhaustive search for a 3-bedroom at Windsor Hills. I searched many, many websites, contacted several owners, etc. before making a decision. I found that for a one week vacation, prices were generally somewhere around $800+/-, with a few outliers to the lower end ($609) and higher end for really modern units, top floor, pool view ($1025-$1200).
I ended up settling on this unit:
http://www.vacationcentralflorida.com/threebedroomcondos/3bedroom404.html, which was only $609 for 1 week. It is a 1-2 minute walk to the pool, is on the top floor (no noise above), is decorated nicely, and has a little peak of a lake view. The managers, Dave and Patti, have a lot of great reviews on the Disboards and elsewhere. They are extremely responsive, responding to all of my inquiries literally within minutes.
Another good option was VRBO Listing #451251. It was a little more for one week, around $740, also top floor, has a little DHS fireworks view, nicely decorated, and in the building closest to the pool (but no pool view). It was not available for the week we wanted, so I stopped torturing myself and went ahead and booked the option above.
Hope this helps!