Sleep-Tight"rooms 6 Hilton, has launched a program to help jet- lagged travelers get a restful night's sleep Currently offered in seven U.S. hotels Hilton's "Sleep-Tight"rooms are equipped with 20 sleep-friendly amenities, including soundproof windows and walls, a machine that generates soothing environmental sounds and a bio-rhythm light box designed to help readjust the body's sleep cycle"Sleep-Tight" rooms ❖ Hilton, has launched a program to help jet￾lagged travelers get a restful night's sleep. Currently offered in seven U.S. hotels, Hilton's "Sleep-Tight" rooms are equipped with 20 sleep-friendly amenities, including soundproof windows and walls, a machine that generates soothing environmental sounds and a bio-rhythm light box designed to help readjust the body's sleep cycle