For anyone wondering what the A-West AA lounge looks like.. this side is above A15, there is a mirror image above A16 through the doorway at the far end (lounge entrance).
The entire BA lounge (First and Club) fits into the space in this photo, which is why it is so capacity restricted.
I prefer the other side as it's quieter and you can also see that you're on your way home!
A-West AA lounge, above A15
A-West AA lounge, above A16