wow,

the main pool at POR at Ol Man Island is really nice. Kids love it. There is a windy slide for kids and adults alike, there are shooting water streams as you swim or go around the little island at the end closest to the bar area, there is a trough overhead that spills water in that same area. Theres also a kids area pool and a hot tub. In addition there are 5 or 6
more Leisure pools around the resort as well.
As far as Poly, we did club level and tho it was a beautiful visit, we actually loved the idea that at POR we had options and not everyone is crammed into one area pool. So I guess its all about what you are looking for.
As to the room choice, we only choose preferred rooms at POR, as it is building 14/18 and they are right next to the main area, the fabulous food court, arcade, inside bar, piano man Bob, the Big sundries shop and the main bus depot. I believe the other room mentioned is
way in the back of the resort which then means Lots more walking....Having been to several deluxes, it always feels like POR is more themed and has more to offer (including the beautiful boat ride to DTD area) that any other mod and a big step up from a value on property. The hotels at Disney that indicate Deluxe (with the exception of GF are way below Deluxe hotels the world over, no comparison in amenities etc, but Disneys Hype has caught on from years of great marketing

Business travelers that have stayed Deluxe elsewhere realize it right away, but I digress.)
If I were staying 1 night, Id get a room for convenience/location. The river view rooms can be even the slightest sliver of water thru your window. The pool views can get noisy sometimes as well....
Just my two cents...
Have a magical stay and enjoy both resorts, they are both nice!