[ Genos takes a look around. Usually the crossing points in malls with ways going in all directions including up and down, there are navigation signs indicating- ]

There. [ He points at the small corridor leading to the tactically hidden toilets. ]

Toilets need to be cleaned regularly, there must be a door for the service staff nearby. [ It's better than nothing. It's a different world yes, but there's enough of familiarity to his own world that rules behind building malls should be similar. He gets up and leads them there, explaining as he goes ] That should be an entrance to the employees-only area.

[ Maybe they won't even need the map and find the phone there ]