I really love Picasso located inside Bellagio with a view of the fountains.. I always asked to be seated on the terrace, so I can enjoy the show.. even though I have been seated inside and enjoyed the art work as well. I love the tasting menu's - I really loved the truffle menu they had when I was there... there was a squash soup that was amazing!
Very romantic.. very expensive, very posh! If you want to splurge in Vegas.. this is a good choice, if you are staying at the hotel - a must!