Mich. Comp. Laws § 427.102
An innkeeper, whether individual, partnership, or corporation, who constantly has in the inn a metal safe or suitable vault in good order and fit for the custody of money, bank notes, jewelry, articles of gold and silver manufacture, precious stones, personal ornaments, railroad tickets, or negotiable or valuable papers and bullion, and who keeps on the doors of the sleeping rooms used by guests suitable locks and bolts, and on the transoms and windows of the rooms suitable fastenings, and who keeps a copy of this section printed in distinct type constantly and conspicuously suspended in the office and in the parlor or sitting room, barroom, washroom, and in 5 other conspicuous places in the inn, or in not less than 10 conspicuous places in the inn, shall not be liable for the loss of or injury to any property belonging to any guest, unless the guest has offered to deliver the property to the innkeeper for custody in the metal safe or vault, and the innkeeper has refused or omitted to take it and deposit it in the safe or vault for custody and to give the guest a receipt. The keeper of any inn shall not be obliged to receive from any guest for deposit in the safe or vault any property described in this section exceeding a total value of $250.00, except under special agreement as provided in section 1, and shall not be liable for any excess of the property, whether received or not. However, every innkeeper shall be liable for any loss of the articles of a guest enumerated in this section in the inn, which loss was caused by the theft or negligence of the innkeeper or any of the innkeeper's servants.
MCL 427.102