We just get breakfast at S71 and walk over to MK when we’re staying at a non-monorail resort. Two birds with one stone.We’ve never stayed at boardwalk, but we love BLT for the proximity to MK. The pool is decent and the food options are good.
Both have several selections availableBLT and BWV owner here. My vote is BWV.
Don't forget you have dining options also at the Swan & Dolphin.