So far, this seems to be my go to hotel over my last couple of vegas trips. It's pretty much the aria without the casino and the smoking.
Service here is top notch and quick. Everything from the valet to the room service was perfect for me. If you're staying here, try to get a room with the view of the bellagio fountains or else you'll be stuck looking at the city or the cosmo.
I guess the draw back is that it doesn't have anything going on in the hotel itself but since it's walking distance to the City Center, Cosmo and Aria, you can't really complain.
Overall, clean and safe and located in the middle of the strip. I can't complain!