Thank you for the clarification. still seems odd to me that perception is needed when the exact location is provided. This game is great about choice. Explore OR pay the price for the hint. This example seems contrary to the game mechanics up until now.
I tried a +2 potion and a spider. That worked for one location, but not another. Apparently you need over 10 perception for number 6. I do have a scoundrel, but without any direction, I have been putting points into dexterity and scoundrel skills.