BEDBUGS !
We came home with bedbugs after staying here one night. We live in a single family dwelling and had never seen these before. A quick Google revealed that these are the bugs we saw in our room and had begun to hatch out on our mattress on several locations. When we called management, they didn't bother to check and said that we couldn't prove it. The timing of the infestation and fact that we didn't stay anywhere else confirmed. Also, I left my bags and clothing on the floor and then placed it by my bed at home. Don't take your chances. These are horrible and we are still battling the pests.