2BR villas can be made up out of a 1BR + studio (known as a lock off) or a dedicated 2BR (a MBR & 2nd BR) The lock off has 2 keyed outdoor/hallway entrys, the dedicated has 1 entry. A dedicated will have 2 queen beds in the 2nd br, a lock off will have a queen & sofa sleeper.
There are a few dedicated 1BR's around, but I don't think they're all that common. I had one at BWV in December.