It shall be the duty of the keepers of hotels and restaurants to exercise due care and diligence in providing honest servants and employees, and to take every reasonable precaution to protect the persons and property of their guests and boarders, but no such keeper of any hotel or restaurant shall be held liable in a greater sum than $250 for the loss of any wearing apparel, baggage or other property, not hereinafter mentioned, belonging to a guest or boarder, when such loss takes place from the room or rooms occupied by said guest or boarder; and no keeper of a hotel or restaurant shall be held liable for any loss on the part of any guest or boarder of jewelry, money or other valuables of like nature, provided such keeper shall have posted in a conspicuous place in the room or rooms occupied by such guest or boarder, and in the hotel office and public reception room of such hotel or restaurant, a notice stating that jewelry, money and other valuables of like nature must be deposited in the office of such hotel (or restaurant), unless such loss shall take place from such office after such deposit.