There are three Miraval resorts in the US, Berkshires, Tucson, and Austin. They are managed by Hyatt.
You can get the second night free thru year end on a points booking. If you check out by October 8, you can get a 15% rebate on the points or 25% if you have the Chase Hyatt credit card. Chase Ultimate Rewards points can be moved to Hyatt. We had a lovely stay at the Miraval Tucson three or four years back.