The best ever!
My last visit to Lake Austin Spa was 9 years ago, and I have always wanted my daughter to be able to go with me, which finally happened. 
While we were there, I suggested to my daughter that we ought to try a new spa each year....her reply was, "Why? It doesn't get any better than this." 
My description of Lake Austin Spa is "a step out of reality," and hers is "a luxury adult camp."
The only downside is that we had to leave! We were there for 4 days, and next year plan a week!