I played this map with bots, and it was truly a lot of fun. The amount of detail is quite professional looking, very nice Valve quality level which is to be expected of you knowing your reputation.
Glad you decided to post it here on the Pit.
I don't recall running into any showstopper bugs, It seemed to play rather well. I was angst about getting caught up on any of the props in the house when the tanks would come. The house basement felt the most safe, but probably the worst space to fight 'in' simply because of all the clutter.
Overall, I think you accomplished the feel quite well. I would love to see an extended version of this in L4D2 as a scavenge map
A very nice addition for L4D.