I agree with Mark, there is not much STR in 34743 and is not the best zone for it to start with since you would have to travel accross town to get there. Most STR is located west and south of Disney. Some smaller complexes are on 34741, not many.
Focus on 34746,34747,34714,33897,33896,33837 and you can't go wrong.
Here is a good place to conduct your search: http://www.SearchKissimmeeHomes.com
Or if you e-mail me with what price range and size you are looking for, I will send you everything currently available.
Charles Rutenberg Realty