I think you've done a really strong job with this. It fits the theme well, i found the choice of only knowing 1 piece of information about the ghosts location each turn to be fun and all your artwork was really strong. There is a lot of really good work to this.
One thing i thought that could be helpful, is if the ghost occasionally gave an indication as to where it was in the room, such as accidentally knocking something off a table / lights flickering etc.
Thought it was really fun, well done!