Utah Code § 29-1-1
If an innkeeper, hotel keeper, boarding house keeper, or lodging house keeper keeps on the premises a fireproof safe or vault, and gives notice to guests, boarders or lodgers, by posting a copy of this section in a prominent or conspicuous place in the office of the inn, hotel, boarding house or lodging house and in the rooms occupied by the guests, boarders or lodgers, that the keeper keeps for their use a fireproof safe or vault and will not be liable for money, jewelry, documents or other articles of unusual value and small compass, unless placed therein, the keeper is not liable, except so far as the keeper's acts or the acts of the keeper's employees shall contribute thereto, for any loss of or injury to such articles, if not deposited with the keeper to be placed in such safe or vault, or in any case for more than the sum of $250 for any such property, unless the keeper shall have given a receipt in writing therefor to the guest, boarder or lodger, and the value of the article so placed with the keeper for safekeeping shall have been declared by such guest, boarder or lodger.
Utah Code § 29-1-1