Cosmo delivered in so many ways. Besides the decor being absolutely spectacular, the service was the best I've experienced in Vegas. Not the 'phony smile because we want a tip' service, but genuinely happy employees that make you feel like the money you spend there is worth it. They have solid rewards program- I think it's 5% of purchases. We got an upgrade and a room with a north view, which means a view of the Bellagio fountain and the mountains. The rooms are contemporary with ultra sleek interior design features. The bathroom is nothing less than perfect- huge jet tub and bench in the rain shower. The beds were comfy but the pillows were too fluffy. That was the only aspect I found to be annoying. Overall, the experience was well above expectations. However, I didn't use the pool. Next time. So when I return to Vegas, I'm heading straight for the Cosmo.