Boardwalk is our favorite! We love the location, being able to walk to both Epcot and Hollywood Studios. I would suggest strollers for the 4 and 1 yr. olds though so they're not worn out from the walk. My youngest was allowed to have a stroller at Disney until she turned 6...she got to have it on the trip she turned 6, next trip was 6 mths later, no stroller, and she was fine.
Make time to enjoy the community hall with your kids--they have some free crafts (as well as fee crafts), coloring sheets, toys, board and video games, free air hockey and Ms. Pac Man/Galaga arcade game. The community hall is by the 'quiet' pool. Also enjoy the free night-time entertainment on the Boardwalk--magicians, etc.
What type of room do you have--pool/garden, standard, boardwalk? When my kids were little, we preferred first floor with our stroller as there is only 1 elevator at Boardwalk. Now that the kids are teen/tween, we prefer 'high floor' to have more of a view.