Like everything in Las Vegas, hotel rooms really need to dazzle in order to stand out. To make our list of the best rooms in town, it wasn't enough for a hotel's beds to be comfortable -- they had to be outright heavenly. A few square feet of marble and a little gold finish on the fixtures wasn't going to convince us of anything; we looked for spaces in which every detail had been carefully considered -- and no expense was spared. And, in case you were wondering: Yes, size mattered, too.