Mentioned above is having been close to the elevator and hearing a lot of elevator noise. Be aware there are no boardwalk view rooms close to the elevator. Those that are close to the elevator overlooking the Village Greeen are pool/garden view.
Go to this room map showing the rooms along the boardwalk:
http://photopost.wdwinfo.com/data/500/BWV_BoardwalkView.jpg The studios that are in blue above Thimbles and Thread are dedicated studios, meaning they are not attached to a 1BR. All those in green connect to a 1BR and can be part of a 2BR lock-off. Some of the dedicated studios have a small daybed. Also, their advantage is that you don't hear any noise from the other room coming in under the coonnecting doors. Thjose are, in my view, the best studios on the boardwalk and you might request a dedicated studio.
Also, none of the studios are actually next to Jellyrolls. Thus the only risk of noise in the studios is from the boardwalk itself and the higher you are the less there is and thus you should also request high floor.