I stayed here for a work conference, and it was overall okay. It wasn't my favorite hotel - everything seemed really low in terms of ceilings, but that seems to be standard for all the Frank Lloyd Wright things that I've seen. The resort is huge - I don't think I walked the entire thing. If you bring a water bottle with you, you can refill it with the water they have sitting outside.
My hotel room was in the main building - it seemed clean, but it didn't really have a great view. If you're outside of the main building, I'm sure you can get better views and rooms, but I know that some of my coworkers who upgraded out of the main area were complaining about the scorpions that had made it into their rooms.
The staff at the hotel was super nice - I have a chocolate allergy and they went out of their way to find a dessert I could eat with the provided meals. There's a bus that takes you to the mall around the corner - the people who drove the bus were always really friendly. It picks you up between the burger place and Blanco's.
I probably wouldn't stay here again on my own, but it was a nice overall experience for me.