I'd absolutely stay at POP. Honestly, even a standard room in the 90s section was fine for me -- cutting through the parking lot made the walk to the main building shorter, but the walk never felt bad at all. The cool thing is that you can always walk to AoA to explore/check out their food court. The Little Mermaid rooms just feel so secluded that it isn't worth it to me to stay there (even though I LOVE The Little Mermaid).