I'll sketch up some more concepts. I've posted a couple just for looks/style of the area, but do you mean more concrete sketches of the area's layout?
Also, idea bounce for the slums:
Hyrule Town had a really large moat around it. After Ganon was banished, there was a lot of prosperity/peace, so the moat wasn't necessary for defense. So when the population of Hyrule Town increased, they drained the moat to make room for more housing, which was quickly erected and where the poorest people moved.
The thing is, this would kinda make a limit on how wide the slums could reasonably be before the player was like, okay, a moat this wide? Really? But I think having the main entrance to town being a bridge that ran right into the rich market would make sense, rather than having to go through the slums to get in.