I stayed there once, and enjoyed it a lot. It was quite awhile ago though.
It was built by the same developer that developed Casa Ybel, Tortuga Beach Club, and Sanibel Cottages on Sanibel, as well as the timeshares at South Sea Plantation on Captiva. (I stay at Sanibel Cottages every year.)
IIRC, the unit layouts are much like Casa Ybel. On the first floor (lower unit) would be the living/dining/kitchen and master bedroom. On the second floor (upper unit) would be the living/dining/kitchen area, and the 2nd bedroom of the lower unit.
On the 3rd floor would be the 2 bedrooms of the upper unit. So both the lower and upper units have two floors.
I know the buildings are somewhat raised, but I can't recall if parking is beneath the units or not. (At Casa Ybel, parking is not beneath the units, but at Sanibel Cottages parking is beneath the units.)
Hurricane House also includes free golf, but I'm not sure about the details of that, ie if the free golf tranfers to the exchanger, etc.