
You can use vrbo.com :
http://www.vrbo.com/vacation-rentals/usa/florida/central-disney-orlando/kissimmee
homeaway.com :
http://www.homeaway.com/vacation-rentals/florida/kissimmee-area/r696
for pool homes, condos and townhouses. Narrow it down to the Kissimmee area or Davenport and Clermont. With your group you probably need a 6 bedroom pool home. You can put in an enquiry on windsorhillsrent.com for that subdivision but there are many others in the same area.
Ask the owner for a quote including rent, taxes, fees and pool heat (if you want it).
If you would rather go through an agency (which is more expensive than individual owners) then try allstarvacationhomes.com or floridasunvacationhomes.com
The homes that are closest to Disney are those in the Formosa Gardens area: Windsor Hills, Rolling Hills, Formosa Gardens Estates, Oak Island, Indian Creek, Windsor Palms, Emerald Island and Sunset Lakes. You can use Sherberth Rd from these subdivisions and be in the Animal Kingdom parking lot in less than 7 minutes (depending on if you hit a red light). DHS in about the same time using World Drive and Epcot and MK in 10 - 15min. When we stayed in these subdivisions the parents would bring the grandkids back for a break around 1pm and then go back in around 4. Magic Kingdom is the longest because of the parking lot being so far from the park. It would take 35 - 40 minutes to get out and back to the house. The other 3 parks were quicker.
On this map Windsor Hills is #1 and you can click on the markers to the left of it and find the other subdivisions.
http://maps.google.com/maps/ms?ie=UT...5,0.11055&z=13
WH, Emerald Is, and WP have manned gates. FGE , Sunset Lakes have a coded gate, and the others have no gate.