The largest city in the Southlands of the Flanaess is Sasserine, a city built much like Venice. Waterways and canals are everywhere throughout the city, and using a boat may be the best way to get from one area to another. The Savage Tide Player's Guide, designed by James Jacobs, with incredibly detailed cartography by Robert Lazzaretti (all street names included), details all of the prominent loctions in the city and how this location may be used in your campaign.
A note about city locations: There are a total of 289 separate numbered locations within the city. Each district has its own set of locations and numbering system. To find a building on the legend (attached below), first find which district it's in (on the DM map) then find the number. Eg. The Taxidermist Guildhall is #14 in the Sunrise District.
Cartouche heraldry by Anna Meyer, used with permission. Visit her page here: https://www.annabmeyer.com/
Here is the link where you can find high resolution, player and "clean" versions that will allow you to place this city in any world, in any location, along with other locations within Sasserine: https://www.patreon.com/posts/126504384