I have never slept on a BWV sleeper sofa, however, we were at BWV, last month and had the new sleeper sofa in our 1 br. villa. The sleeper bed occupants were very happy with their sleeping arrangements and raved at how comfortable the bed was.
We were at BWV in November and found the sleeper sofa to be greatly improved. It is really uniquely designed. You won't have to remove any of the sofa cushions and it sets up really easily. Our DDs usually complain about having to sleep on the sofa but said it was really comfy this time.
We got to try it out in July and thought it was great! Now our kids slept on it, but DH and I both tried it out to feel the difference and thought it was greatly improved - no more bar in you back!!