I would add - don't have any safe openly visible even if you have no valuables. My father was killed by some stupid workmen who thought his safe, kept in the bedroom in full view, contained something worth stealing. It had only things of personal value (family documents, etc.), not monetary value. He was, unfortunately, unexpectedly home sick the day they decided to 'get rich.' Seems everybody was surprised; my father tried to run, but ...
That's terrible. :(
Sorry to hear about your Dad. You are right, conceal the safe.