An Evergreen Airbnb owner, Karen Martiz, is grappling with the aftermath of a disastrous rental experience after her mountain retreat was trashed by renters who threw a massive party. Martiz, who has successfully operated the Airbnb for several years, was shocked by the damage left behind after the weekend guests stayed from Saturday to Sunday. She initially grew suspicious when she overheard conversations through a security camera positioned at the back of the home, picking up the sounds of a much larger crowd than she had expected.