They aren't very loud in the rooms. If the kids want to get up to see them? Why not, they don't last long and the view is very nice.
We spent a week on the 10th floor and loved the view.
The rest of the hotel? Monorail service was subpar and the rooms, while large for Disney standards are tiny for "deluxe" labeling. I was shocked at how small the rooms were. Don't even get me started on bus service.
IMO the only two reasons to stay are the view and the ability to walk to MK.