Pros:

Detailed
Unique Setting
Superb layout
Optimized

Cons:

A little too small
More variety of item placement

Conclusion:

This map oozes with originality and a professional look. Great optimization as neither I nor my friend experienced lag or hiccups. The layout would provide a fantastic on Survival Versus, but for Reg Survival, it is a bit bland.

Great work and if you ever decided to "redux" this map, definitely add one more area through one of the alleys, etc. With that said, one of the BEST AND PROFESSIONAL looking custom maps I've ever seen for the L4D series.