I'd love to run a retreat center like this. I'd augment it with a scientifically-backed nutritional plan, have floatation tanks available, and spend a bit more time helping visitors make sense of what they're experiencing and how to proceed.

And definitely, definitely manage expectations better than most of these places. Most of the cultish vibes and/or disappointments that can emerge from these kind of retreats are because people are prone to hyperbole when they spend some time on activities so completely out of their frame of reference.