I've read the negative reports. Here are the complaints that I remember:
the a/c was too loud (We've never noticed, but since it is central air you can be sure that it is quieter than those through the wall units in the Mods and Values)
the elevator smelled (again, never had that problem, but if it had it would not have ruined our entire vacation - and we would have taken the stairs up the one or two floors if it really bothered us)
the lobby is dated (what the heck does that mean? The Disney Deluxe resorts are themed to take you to another time and place - and the poster with this complaint prefered Wilderness Lodge's lobby which represents the national park lodges built during the Depression - pretty "dated" if you ask me, but I think it is nice.
the light from the tiki torches came in through my slider (I can't believe that someone actually complained about this! I love the tiki torches!! And as far as I know, all the rooms are equipped with room darkening drapes

)
the pool is too crowded (all the pools at Disney are crowded, but I've never seen either of the pools at the Polynesian closed because they have reached capacity)
Housekeeping was not completed when I came back to the room mid-day. (not every one can have their room cleaned first. If early housekeeping is important, request it.)
It is too expensive (yup! I agree and bite the bullet almost every time. I think the park admission, food and air fare are all too expensive as well!)
To the OP, go to the Polynesian and have fun!
We're off to the fest of he who must not be named in just 3 days.