If you have a studio, you can request "Village Green". The studios in this area are dedicated (no door to a 1 bedroom) and have a small bench located where the door would be if the villa was a lock-off. You will have a partial view of the Boardwalk and higher level fireworks from EPCOT's Illuminations. The Village Green is the lawn area between the lobby and Crescent lake. These rooms are also close to the elevators.
Otherwise, you have several choices to make. If you are traveling with strollers, wheelchairs, ECVs or guests who can not easily use the stairways, you will want to request close to the elevators. There is only one bank of elevators that serves the BWV wing and some of the hallways can be long.
You could request view of main pool (Luna Park), the quiet pool (and Community Hall building) or the croquet lawn. The latter area, while quite a distance from the elevators, is very quiet and overlooks the canal and Swan & Dolphin resorts. Very pretty. Plus, if you can do stairs, these rooms are closer to the Swan's bus stop than the BWI/BWV bus stop. You can get off at the Swan and walk back to your room much faster than waiting to get off at the BWI/BWV stop.
Have fun!