I would have only given 3 stars but I was impressed at the amount of coed areas they offer. We really enjoyed the coed endless spa that overlooks the Liquid pool area. It was really fun to people watch. On the downside, perhaps you may not find that booming club music and girls in skimpy bikinis are too relaxing.
My boyfriend and I opted for the spa entrance in lieu of a treatment. It cost $30 per person and allowed us unlimited entry for the entire day. I was very surprised that once you look past the upscale decoration, the only thing the spa really offers is a steam room, sauna, jacuzzi and some relaxation rooms. If you're used to a mediocre spa experience then this one will probably really impress you. I've been to most of the high-end spas in Vegas and this one just doesn't compare. You will be disappointed if you are expecting something like Canyon Ranch Spa. They don't have any special showers with shower heads to reach all your parts like I've experienced elsewhere and the spa products (shampoo, lotion, etc.) are just average. I guess I just expected a little more from this level of resort.