A map is not a plan of city streets, with markers for churches, post offices and traffic signals. It can be that, of course, but your map is a space is personal. It’s a collection of smells and sights and sounds that’s triggered every time you re-enter that space, or go somewhere like it.
Each one of your readers has their own map, their own shorthand for streets, plazas, rivers, and they have gps maps to find their way there in the first place. What the relationship between their map, yours and the journey they’re going to make is we can’t tell you, but we’d suggest it’ll be more trigger-led than co-ordinates.