I like the map, IMHO the market place area has quite some potential game play wise with all it's open directions (reminds a bit of casa in that regard).
Some issues I saw:
Z-Index fighting on the decals on the floor:
The glass is almost non-detectable; I didn't realize it at first that I was running against glass because visually they're so hard to see. I'd suggest to make them more visible:
Still some lighting issue, like the wall here. In general I think the map, although you clearly set out for dawn, has too dark areas like this one. Maybe it's possible to use more lighting but with colors to create a certain mood?
The handrail look nice but the blocking effect it has on movement hinders gameplay IMHO. Maybe it's not necessary and the whole of the hallway can be used to give entry to the sewer here:
The water in the sewers seems to have it's own light. Also, I think having just that black dark there's doesn't fit well; maybe all tunnels should have a led-strip attached to their ceilings or something:
Are you still planning on doing an update?