Just came back from BWV and had a preferred studio with a huge balcony. It's the corner room near the main lobby. (Just a note..... It gets very loud at night at closing time from about an hour or two, so I'd go up a floor or two) The room was 2065, I'd get this room again, but higher up if my dd was with me. The deck was enough for 5 of us to all hang out, and spread out. My friends had a deck at BWI and it was small, so they'd hang out with me!
Here's a pic.... not the best though (just a corner of my deck, but you get the picture, it's right next to the main deck at BW)