Leth Nurae is simpler than it appears. There's an entrance to the east, and one to the west. Between them the main road describes a large circle. Contents clockwise from west gate: Dragoon Barracks (north of road); Merchant Areas (both sides); long stair to plaza with Broker and mailbox - this is pretty much the "top" (north end) of the circle, if memory serves. Still going clockwise, next is the Crafters' Area; uphill stretch, plaza with the Arcane Sanctum, then the East Gate. Finally, if you keep going round, you'll go past the Royal Palace, the sluice to the waterfall, and will circle back round to the area near the west gate.
Hope that made some sense.
As for maps.... I love maps, so I can't really say no to such a suggestion, though I'd hope they were rough around the edges at least visually.