Immersive Ink have published a revised version of their winning entry in the 2009 one-page-dungeon contest, Secrets of the Old City. You can get a copy over here. It's specifically for Delving Deeper, but of course easily converted to similar systems.
I liked it enough to prepare an unkeyed map for use with "fog of war"-enabled software.
This was just made by taking Simon Bull's original map, as rendered by Tim Hartlin, and carefully stripping out the location numbers and hidden elements (traps, mostly). I also blocked out walls in front of all the secret doors so that if you're revealing the map one room at a time you can show a room without necessarily giving away the fact that there's a secret door in there. Most of them had a fairly obvious "non secret" side, which made that a lot easier. I also moved the torch sconce icons so that they were more-or-less entirely on the side of the wall where the torch exists, with no overlap across walls into other rooms.
I may gin up some notes on making this all a bit more "Anomalous"--I suppose the fact that my players have just returned to Denethis had something to do with my interest in an urban module. So we'll see about that.