There are many places to go in this map, some terrible, others very advantageous, here is a list of good and bad ones.
Climb the ladder above the car, only when you have a awp or aug. This is a VERY advantageous "snipiers perch". A disadvantage is the obvious blind spot of behind (see image below). Make sure you don't let a terrorist climb that ladder and knife you to death (this has happened to me numerous times). You can easily fix this by coming up in pairs, or using a Degle to cover your back.
The bridge overlooking the front door can be a good place to cover your team when they are rushing in. You can drop in on the enemy from the small wall that you can climb on (located left of the bridge). Disadvantages is the ability to shoot through walls. A terrorist can come up with a high powered gun and shoot the crap out of you. This can occur whenever you are on that small wall, but if this whole process is executed fast enough, you are most likely not to get shot up.
The roof can offer very good cover sometimes, depending ont he angle that ur opponent is attacking you at. Also, if the Terrorist team usually rushes, you can hide near the edge of the roof, look down, and easily get headshots on unsuspecting Terrorists. This can be executed over the main door (red), or the back door (green). Also, if you do decide to go on roof, I STRONGLY reccomend you bring some grenades, 1 HE grenade, and at least 1 Flashbang. This will help protect you from Terrorists coming through the vent.
The car has a very unique and INCREDIBLE advantage! The computer looking things in the car are actually cameras! They let you see 3 different angles, 2 in the Terrorist occupied building, and one outside. Just go up to the "computers" and press the activate/follow command (default is the "E" key) Use the same command to deactivate the cameras. Beware, you are completely succebtable to gunfire when looking in the cameras. Also, beware! The Terrorists have this same feature! *NOTE* Some Servers Have Diabled This Feature
BAD
ALMOST NEVER GO INTO THE VENT UNLESS PREPARED FOR THE CONSEQUENCES. The vent is a very good way to get to the hostages, but there is no cover, bullets easily penetrate the wall of the vent, and there is almost nowhere to run. When the round time is low, the number of Terrorists is low, or willing to be risky are some okay times to go in vent. Other than these, you should only consider popping in and out of the vent to blow off a couple of rounds at the Terrorists, and maybe throwing a grenade, but other than this, vent should usually remain off limits.
The back door (green) can also be a death area. When I am playing, I often notive a large amount of dead bodies lying around this door, most Counter-Terrorist. The door has a blind spot of behind you, because it opens in (for Counter-Terrorists). Most player's I see go through the door only after shooting through it to eliminate enemies behind ir, or throwing a smoke, flash, or HE grenade. Once inside this door, make sure to WREAK HAVOC!!!!!