Those pics must be from a lower deck, as I was in 8504 and the angle was not nearly as pronounced. The bunk was separate from the couch in our room, and there was no privacy curtain, but that was not a concern for us.
This room was huge and the tilt in the wall was not a factor. The only disappointment was that there was only one window in such a large room, and while the view was ok, it could only be seen from a small portion of the room.
No real attic feel, tons of space for a reasonable price, we were very happy with 8504, but it appears the front facing rooms on deck 7 and 6 have more of the slant in the wall as compared to 8.