I am sure that the OP will reply to your question, but I can answer it as well, yes POP is very clean. We stayed there this past March and plan to stay there again in Dec. We loved it, very cool theming and as clean as any hotel I have stayed at (I have stayed at many upscale places for conferences).
It can be a bit crowded as this is the only value that has it's own buses and while we were there ran very smoothly. Only once did we have to wait more than 20 mins and that was for a MK bus.
The food court has plenty of variety and the over all nostalgia of the place packs plenty to do.