I don't know about Boardwalk, but the sofa bed in the Beach Club Villa was just fine. No complaints at all. I imagine they are pretty much the same. Of course, if you have a real whiner, they may not be happy.
They are awsome! My wife & I spent a week in a 2 bedroom lock-off this past November. Not a restless night at all. I would love to have one here at home.