I would go with 2 rooms at POP. It's cheaper. You'll have 4 beds instead of 1 bed and 3 pullouts (chair, sofa, and ottoman). I think the beds would be more comfortable for adults than the pullouts. Sleeping on a pullout chair for a week would not thrill my DD!! We are 5 adults ( me, DH, DS 26, DIL 25, and DD 24 and always get 2 rooms. More private for DH and me.
This ASM thread has pictures of the pullouts and lots of info on ASM suites
http://www.disboards.com/showthread.php?t=1072409