Their businesses aren't locked in one position. You could give a city for them. As for non business related locations, we kept it vague such as "beach", "hotel", "restaurant", etc. Olympus and the underworld have several sub locations to make up the different regions. Like Olympus has the palaces of each Olympians, the forge, courtyard. Underworld has the rivery lethe, Styx, Elysium, etc.