This is the spa of spas, simply gorgeous, and it’s in your backyard. Clusters of wildflowers and lavender are scattered across the gentle, rolling slopes of hillsides, and the 400-square-foot villa suites combine an unstudied, intimate French farmhouse aesthetic (wood-beams, whitewashed walls, and plank flooring) with boutique hotel touches (beautiful, one-of-a-kind antique pieces, delicate chandeliers, and bouquets of tea roses). The 200 private acres are dotted with what could be described…