We were assigned to 6500 on the Magic once. We took one look at the room and asked if there was any possibility of being moved. My DD likes to sit on the couch to read and draw, so the lack of a couch was a major issue. At that time (years ago) I wasn't aware that the beds could be separated, and I wanted a second bed. Interestingly, GS didn't offer the option of separating the beds, they did offer a roll in twin sized bed if they had been unable to move us. Basically, the GS CM asked us to have a seat for a few minutes and came back a few minutes later with a new assignment for us.
Yes, the room is huge--and the bathroom situation was OK....but I wanted my couch/bed.