If you have a Preferred view - Pool/Garden, you could end up overlooking either of the pools, the canal that goes to MGM, the Swan/Dolphin resorts, the new croquet lawn (when it's finished) or even the Village Green (lawn between the lake and the lobby. There are only a few studios in this area).
The Preferred View - BW view rooms are just that - they overlook the Boardwalk and are a separate booking category (even though they cost the same number of points). If you have one, it will say Boardwalk view on yor confirmatuion letter.
If you booked through CRO, there is only one category - room ssignments are ROH (Run of the House), which means you could be assigned to either a Standard View or a PV - Pool/Garden. No cash reservations are assigned to BW view - those are reserved for members who pay with points. Most cash reservations end up in the PV - Pool/Garden category.
Best wishes-