Some are heated and others are not. Plus there are hot tubs in the grotto/tunnel between some of them. But 63 degrees? That's pretty bad.
The Grand Cypress offers a variety of water experiences, but no map or directory. You just have to explore. Try the rope bridge over the big pool (if it's still there). If you don't like one rock slide, try the other.
In addition to what an earlier poster said:
Pro's: the grounds are big and gorgeous. Just wander around for a while; like being in Sea World without the whales (or the crowds). Had friends out from Orlando/Winter Park at their request. Location is excellent; back when you could cruise through the Ft. Wilderness gate, it was only a couple of minutes to the MK.
Hemingway's (the nice restaurant) was awesome. When we were there for Sunday brunch, the place was empty; we were literally the only ones in the room. Of course we got one of the nice tables overlooking the pool/lake. The harpist took "requests" and was very good. The wait staff was doting, but not obtrusive. They made a hot dog for our youngest even though it wasn't on the tiny kids' menu. Hugely expensive, but well worth it for a top-flight restaurant.
Cons: the room was nothing special, though it was for a premium price. Just a hotel room. Also, the front desk messed up our bill; we were on frequent flier/stayer points and they tried to charge us full price. This also happens in other hotels, so just make sure it is clear when you check in and review your bill at the end.