Loved it.
I came here for a work conference that was being held at the Bellagio and got to stay there. Man, it really earns it reputation.
Since work paid for the stay, I can't really comment too much on price but I can say, yes, it's expensive BUT if I had paid, I wouldn't have regretted it at all.
Service promptness and friendliness is top notch. Based on previous stays on the strip, Bellagio service blows any of the other resorts out of the water. The food quality is excellent and everything is kept very clean. It will be very difficult coming back to Vegas and staying anywhere else - Bellagio is hard to beat.