Goodnight, sleep tight, don't let the bed bugs bite

Portuense Cento is infected... This is not what I had in mind when I pictured traveling Europe! My roommate, Dianna came back from her weekend in Florence with some itchy little spots. They were in the "breakfast, lunch & dinner" pattern that is typical of bed bugs so she went to the university doctor today. Sure enough, they were. So the university came to check her mattress but found no signs of them--hopefully she was only bitten at the hostel and didn't bring any home with her. I'm a bit panicked though because we share a room, so I'm washing everything I own on high heat and steaming my mattress with an iron just to be safe. Eeeeeeek!