I stayed here this week while I was at a conference at Mandalay Bay next door. Mobile check in was smooth and I got my room two hours early, which was awesome. The room price was $85 plus $20 resort fee (before tax).
I felt a bit claustrophobic staying inside a pyramid, but my kids thought it was cool when I Skyped with them later that day. Fortunately I was high up on the 17th floor, with a great view of the sunset, monorail and airplanes taking off from the airport beyond my west-facing, insanely-slanted window.
The room was adequate but smelled of smoke, not unusual for Las Vegas. Large TV and three different desks made it a good place to work, and the wifi worked great. Wouldn't mind staying here again on my next business trip.