Warren the 13th

"Reader beware! This volume contains witches! secret codes! monsters! mazes! and other sinister material!"--back cover. "Twelve-year-old orphan Warren's pride and joy is his family's hotel, but he's been miserable ever since his evil Aunt Anaconda took over the management. Anaconda believes a mysterious treasure known as the All-Seeing-Eye is hidden somewhere on the grounds, and she'll do anything to find it"--