Johnny Prehn The Folly Joshua Tree is an off-grid, two structure space designed by Malek Alqadi. Alqadi and business partner Hillary Flur had prior success renting their Los Angeles apartments on Airbnb. The space was created to blend indoor and outdoor living and utilize minimalist design. Architect Malek Alqadi and business partner Hillary Flur decided to create The Folly Joshua Tree after finding success renting their Los Angeles apartments on Airbnb.