We got 6 STR under our management in the Great Orlando area (Davenport, Kissimmee, and Clermont). To be honest, you would never feel low seasons in the area like Disney/Universal Studios. To our experience, Single Family House with a private pool in a 10-15 min distance from Disney would be a good spot for travelers all over the world, especially UK, Canada people. Layout-wise, the STR with 5-6 bedrooms resulted in the best ROI.
When considering in investing in STR in Orlando area, one thing needs an attention, which is the zoning. HOA really is strict on STR. Make sure the STR be allowed in the community. Also, the community with massive resort-style amenities is a good way to invest (like Champions Gate, Storey Lake, Windsor at Westside, etc) since most of the travelers like to stay in those types of communities. The STR in those communities appeared to rent really high night rate during the high seasons. The drawback is guests tend to be more critic to the STR in those communities.