Someone who owns there may better be able to respond, but I believe all of the units at WKORV are 2BD lock-offs (1BD + Studio). So a 1 BD OV would just be the larger 1/2 of the LO and could technically be throughout all of the buildings.
I do not know if there is a resort/building/unit map, but if you search other threads you may be able to find how the units are numbered and how good a view a unit has is (say from back to front).
You can ask potential sellers what their deeded week and unit is, but unless you have a fixed unit/week, I don't think you are guaranteed a specific unit when you make your res., only that you will get your view category - OF, OV, or Island View.