If you choose POR because of the mansions, be mindful that only two mansion buildings (Acadian House & Magnolia Terrace) have regular rooms now. The other two mansion buildings (Parterre Place & Oak Manor) are entirely full of Royal Rooms. If you do not want a Royal Room, you would have to request a mansion and it wouldn't be guaranteed. Only way to guarantee a mansion is by booking a Royal Room.
I prefer POR over POFQ. Even though POFQ is considerably smaller, I find it to feel more crowded - especially the food court and bus stop. If you are going at a slower time of year, the size of POR will make it feel much more empty which I prefer.