Only stayed one night and didn't have a spa treatment, but did visit the spa. They are currently doing grounds improvements so I'd say the environment will only get better, but I found it very peaceful and relaxing. Tucked away in the hills outside of Austin, it is very tranquil. Had a sandwich for lunch and an amazing breakfast and dinner. Dinner was already gluten-free so I didn't even have to worry about it.
Meeting facility was very nice. Staff was very helpful without being intrusive. Room was very clean with nice amenities and hill country view. I didn't get to do many of the activites, but there was a huge selection that would appeal to just about anyone. Found the trails a bit confusing, but still enjoyed the hike.
Overall, I would give an A+ and hope to return soon.