Many rooms in the historic Holbrooke Hotel in Grass Valley have their eerie histories, characters and tales.Sleep in the Black Bart Room, used by the highwayman who robbed the stagecoaches of the rich. Fall asleep to the sounds of little ghost children jumping on old mattress springs. Catch some Zs in Room 9, and wake up to a Victorian-dressed maid folding your clothes.But beware of a room where a suicidal gambler slit his throat and was found dead in a pool of blood, a razor blade at his side - no one knows which room it happened in.Feeling queasy, maybe …