A destination can be obvious from above and confusing from the entrance.

Overviews and ground-level positions are two different kinds of knowledge. From above, the layout is simple and the route is one line; standing at the entrance, you have signs, corners, and no way to see round any of them. People who design a place usually hold the first view and forget that nobody using it does.

Wherever you are guiding someone, describe what they will see rather than where things are. First door on the left after the lift, past the noticeboard. And when you get lost somewhere, note where the confusion started, because that is the point worth telling someone about.