Mich. Comp. Laws § 427.204: Sale of unclaimed property; surplus proceeds refunded.

Sec. 4.

Such keeper of a hotel, inn, boarding house, lodging house, or furnished apartment shall make an entry of the articles sold and the balance of the proceeds of the sale, if any, and within 10 days from such sale, shall, upon demand, refund such balance and surplus to such guest, boarder or person leaving the articles sold.