Del. Code tit. 24 § 1502
Whenever the proprietor of any hotel, inn or boardinghouse provides a good, sufficient and secure safe or vault in the office or other convenient place in such hotel, inn or boardinghouse for the safe keeping of any money, goods, jewelry and valuables belonging to the guests and boarders of such hotel, inn or boardinghouse, and notifies the guests and boarders thereof, by placing in every lodging room and other conspicuous places printed cards or notices stating the fact that such safe or vault is provided in which such goods, jewelry and valuables may be deposited and that the proprietor or proprietors thereof will not be responsible for such money, goods, jewelry and valuables unless deposited in such safe or vault, and if such guest or boarder neglects to deposit such money, goods, jewelry or valuables in such safe or vault, the proprietor shall not be liable for any loss of such money, goods, jewelry or valuables sustained by such guest, by theft or otherwise.
24 Del. C. § 1502