Beach Club would be my first choice, but if a Boardwalk shows up first go with that one. It is not that much farther of a walk or you can jump on the boat to IG.
If busses are slow for Beach/Boardwalk, you could catch a Riviera, Caribbean , Pop, or Art of Animation and use the skyliner.
I always try to group hotels that get me where I ultimately want to be so I have multiple route options when the WDW transit is being slow where I want to be.