The pool bar is actually outside of the pool gates, across a walking path, so it doesn't really have a view (just a "view" of the fencing around the pool). You can always grab your drink and go for a walk over to sit by the lake which is a nice view.
For the top floor, I think you are thinking of the bar at Topolino's. At least when we went, you needed a dining reservation to have a drink there. Not sure if that has changed, because it was really a shame. If you are able to have a drink there, it certainly has more of a view.