Faaaaaaantastic!
1. The water fountains
2. The casino buffet
It's quite hard to describe the entire hotel, casino and outdoor area. The water fountain or lake with hidden fountains beneath are incredible. It is only worth experiencing first hand.
The casino is very new, clean and at the NEW Las Vegas standard, one of my favorites. You either win or lose, the games are all the same. I'm not a high roller, so I'm not sure what it's like at all anyway.
The buffet is definitely worth it. For $5.00 extra you get endless champagne along with one of the best and largest quality buffets I've ever had. I do not typically do buffets, but it's the Bellagio and our friends told us we had to do it.
A tip: visit around 11:00am between the breakfast and lunch transition.
I hope those reading this are lucky enough to have perfect weather to experience the outdoor fountains.