Depends how you intend to spend the time in the air. If you want to sleep, then somewhere away from a) the bar and b) the loo's etc. If you're not planning on sleeping, then might as well be somewhere near the bar...?[:D]
And personally, I prefer a suite that faces one of the dividing partitions - that way you don't get the light from someone else's suite shining across at you when the cab lights are out/dimmed.