We've stayed there twice. loved it both times. PP is correct AB has trundle beds, not MB.
the mian pool area is great, the kids loved it - we adults LOVED the spa (i told the kids it was the adult pool).
The resort is large (lots of walking), but very, very pleasant and beautifully groomed.
There are very differring opinions on the buses. we found the bus service to be okay. certainly the mornings, or leaving for the parks were good - the buses would come regularly, and usually no one had to stand. But leaving the parks, any park the buses were crowded and if you leave the park at closing, be prepared to wait and stand on the bus as they fill them to capacity.
The food court is decent, a good variety of food.
Fulton's Ganeral Store is a good place to shop, either for forgotten common items, or for souveniers.
All in all, POR is an excellent resort, but having not stayed at any other Disney Resort, my opinion is a bit biased. Trying CSR next time, if that doesn't work out, then it's back to POR for us.