I am here now for our very first Poly stay and we love everything about this resort! There is construction but we have not heard any. I suspect this is because it is Christmas time. It is mainly in the area of the DVC long houses so you should be fine.
We are in Samoa and love it. We are on the 3rd floor and we overlook the pool, the boat dock, and the if we look right we can see the beach and lake. There are trees there but you can see through them. We have very much enjoyed watching fireworks from the beach the last 3 nights with the music piped in!
The dole whips are huge and the monorail access to both Epcot and Magic Kingdom can't be beat.
The only downside to our room is the pool entertainer. She is loud and we do hear pool noise. However, we all managed to fall asleep just fine during our mid day breaks so she isnt horribly overbearing. It is never an issue at night. You will hear the horns on he boats though. They honk those things like crazy. We wear ear plugs to fall asleep but my boys sleep right through it.
I chose not to stay in a longhouse by the marina bc I was worried about Luau noise. I can't hear it at all in our room.
This resort is very small so it really isn't far to get anywhere. However, we love this location for the pool and captain cook access.
My only complaint about this resort having come from POFQ is the sinks in the bathroom. I can't stand not being able to wash out a mug or wash my hands while someone is in the bathroom. I have 2 sons and a husband so if someone is in the bathroom I can't get in there at all. But that's my only complaint!