I think the primary threat in this situation is burglary of an unoccupied hotel room. Security chains are fairly easy to defeat; a bent clothes hanger will do.

I think the primary threat in this situation is burglary of an unoccupied hotel room. Security chains are fairly easy to defeat; a bent clothes hanger will do. Deadbolts are probably pretty hard if there's no external key hole. Someone intending harm to the occupants of a hotel room might just break a window.