I have only been to Bellagio and Paris. Paris, while smaller, was preferred. Bellagio was super busy and not very relaxing...BUT, that may have just been circumstance because Bellagio also has a patio that you can sit on overlooking the pool. Quaint. People get goofy over Qua at Caesar's...that would be a tram ride and a walk through Bellagio (and partially through CP) from Aria.