Hi Gina,
I would be very cautious about purchasing a short term vacation home in the Orlando area. If you are going to school most of the vacation homes are located in Osceola County and North Polk County which is a pretty good drive from most schools located in Orlando.
In my opinion vacation homes are not investments but rather luxury items that should only be purchased by someone that enjoys vacationing in Orlando and can afford the cost of owning and maintaining a second home. I would not look for a vacation home in Orlando to have a positive cash flow if you choose to not stay in Orlando after school.
Orlando has been hit pretty hard with the down turn in real estate and there are some really go buys out there. With so many homes in Orlando available for both short term and long term rental you may want to rent for a while and see if Orlando is for you. For a long term investment you may find a home near the school you are going to attend that is for long term rental use that you can rent out long term if you choose to leave Orlando after attending school.
Short term rentals in Florida are governed under the Florida Statue 509 which also covers other short term lodging like hotels and campgrounds. Florida is a short term rental friendly state and I do not see any reason for that to change. In Central Florida the short term vacation homes add millions of dollars to the local economy.
Make sure to keep doing your homework.