We loved staying at the Poly. We were in the Rapanui longhouse. I think it is the farthest one from the main building (Ceremonial Long House) but the resort itself is not that big so we didn't mind. We were on the 3rd floor facing the inner court. The other side faces the monorail. We had other cruisers in our building but not sure if all of the cruisers were in that building.
Good things about Rapanui
It was very quiet
Our room had an outdoor balcony (not all buildings have them)
It is the closest building to the Transportation and Ticket Center so getting to EPCOT is quick
It is short walk to the bus stop to Animal Kingdom, Hollywood Studios and Downtown Disney
Main Ceremonial House is not that far.
The only thing we found a bit of an annoyance was that the elevator was at the far end of the building and out room was the first one at the near end. We only used it for luggage and once when we returned from EPCOT so it was not a big deal.
Favorite things about the Poly
Watching the fireworks at MK while in the pool (or sitting in a lounge chair on the beach)
Watching the electric water parade from the beach
Access to the Magic Kingdom
The beach - our little ones loved it - they also have squirting fountains
The grounds
Breakfast with Stitch
The staff was great
The food at Captain Cook's, the quick service food area is not bad but there are not enough tables inside and it is terribly disorganized - we hated the touch screens and the way you had to get in line.
There are tons of photos and video from our February trip at
http://s198.photobucket.com/albums/aa319/eanselm/2009%20Disney%20Vacation/
I have things sorted into albums that you can select along the left of the screen