We've intentionally left the cities unmapped for several reasons, the primary reason for which is we don't really want to define the city so people can continue to add shops, points of interest, and even whole districts without feeling constrained by the apparent map. In the cases in which logs are conducted within the cities themselves (which does happen, but seldom for more than one or two events in a major time period) we will be as descriptive as necessary to keep players informed of their options.