Ahoj! I will be studying in Charles University from this August to December. I will be staying in their dormitory, Kolej Komenskeho. I was wondering -- 1. I am not familiar of the safety leaving my stuff in the dorms, especially my laptop. Should I bring a lock? Get insurance? Have there been break ins (for instance, by cleaning people)? 2. I am also concerned about leaving my passport in my room, although I know I should bring ID everywhere I go. When in doubt, I will bring my passport with me always ...but is this necessary? I have heard of thefts in hotels, but not much in dormitories there. I am generally concerned of the safety of my things there, any theft of student possessions and such. Thank you!