I think the 2 BR lock-off would also have a seperate little balcony. We've had the 2 BR dedicated, and it just has extra counter space in the 2nd bedroom where the kitchenette would be. That's the reason why we liked the dedicated.
As far as the access to the bathroom, we stayed in a building that didn't have that second access in November, with DMIL. We chose it because it had a much better view than what was available with the second access. I'll tell ya-by the end of the week, we really wished we'd made the other choice! Yes, it was a very nice view, but to have DMIL trooping through the bedroom every time she had to go potty (although she was very quick and quiet about it) felt VERY strange!