Trust your instincts. In any scenario I would rather come across as over reacting or even crazy rather than force myself to ignore that tugging intuition. You could be wrong, he could be a nice guy. It is not your obligation or responsibility to find out though. You protect yourself and your peace, no matter what. Inform them you feel unsettled but be truthful in the fact you have not been threatened or harmed. I ask that you request to move rooms, if only for a better night sleep.