We paid cash to stay two nights on the way from Ohio down to WDW in 1999. Was it worth it? Well, this year we stayed at the Days Inn in Hardeeville. It was only $50 a night for the room and it was right on I-95 (HH is another 30 minutes east of the interstate). My wife and I drove out to HHI after supper to shop at the Disney Catalog Outlet store and to see if the DVC resort had improved since our stay in 1998. Things are getting better at the HH resort, but it's still a bit pricey to use as an overnight stop.
I would rather use my points to extend my stay at WDW. But if you've never been to HH, it's worth checking out at least one time. But you really can't appreciate the resort unless you stay two or more nights IMHO.