There is a compass. North is indicated on the minimap, in the top left part of the screen. If you open the main map, you can see your character's location and which direction they are facing.
Yes, by sealed room I meant the room you are trying to get into, with the busted jail cell type door.
From the entrance, ignore the broken door and just go the only way there is to go. Keep going past the barrel, turn left, turn left again, go to the end, turn left, turn left to head to the north west corner, turn left and head south, so there is a wall on your right, a section of shelves on your left and the false wall straight ahead.
I cannot imagine HOW I would have found that without your help.
Thank you so much!!
You're right about the compass
Since I had actually not utilised it so far I wasn't even aware it was there.
I just keep looking at the map for the destination I want and make sure the character is heading towards the identification marker on the map