Great looking map. I like (for the most part) how it fit together. Also, the mood and lighting were well done.
As for the review:
Grass prop hanging over the edge.
Alot of your door ways and windows lacked any kind of trim. When
two diffrent textures meet at an edge it can look very tacky, try to
add some more detail brushes.
This is a big issue to me, the skybox. This shot is showing me
toss an explosive barrle out the sky light. It hits the skybox
and blows up, and that looks horrible. remeber always make your
sky box very high so props dont run into it, you can always use a hint
brush to to cut down the vis leaf.
This place just didn't feel right, just looks like a bunch of props slapped together.
That prop isn't a spot light, it should be casting light all around it, not just down.
Use env_sprite and not env_light_glow for small lights like this one
(near the room with the gas pipe) env_light_glow fades as you get
closer to the origin, which looks very strange becuase light halo's
dont tend to do that in real life.
I dont think that charger should be there.
Your lift stops a bit short, I would try and figure out a way to get some doors in there so you dont see the lift.
Very nice, though there may be some game play issues I though that the
map fit together very well and apart from some visual flaws looks very
nice.