Blurring Indoor-Outdoor Boundaries Sensory experiences go a long way. This "principle" was well integrated into the array of services offered by modern hotel owners, who struggle to keep the indoor-outdoor transition as "ethereal" as possible. Not only are hotel rooms expanded through large decks and terraces, but nature is brought inside in every possible way. Wood panelling, stone decorations, lush greenery, indoor waterfalls- these are just some of the elements employed to release the tension of hotel guests. explain