B.G.
We were just there in November and stayed in the Windsor HIlls community in Kissimee. Came highly recommended by many neighborhood friends. We had a two-story, three bedroom, three bath townhome with it's own splash pool. It was five minutes from everthing. Truly awesome experience! The gated community also has villas and condos for rent as well tons of community ammenities. You can find listings for the community on vrbo.com.
good luck!