i think its way easier than the embassy level. no snipers, no massive waves of guys, and no time limit.
i recomend the m14. with a bipod and either a laser or a thermal scope. more accurate than m16a2, and its more powerful.
put bravo just inside the big open double doors, leave jester on overwatch just inside the back door, then climb up to the very TOP floor, there are three floors. i think what kills people the most are the terrorists who come through the roof, and get you from behind. so if your on the top floor, you can gun them down as they come through the hole in the roof. then you can assist your team from above.
also, contrary to what some have said, its easier to man the turrets and kill them from the outside for several reasons
1. conserve your own ammo
2. better to kill them from a distance then to let them roll up on you in CQB
3. no real danger from RPG's, unless you stand around like mr. magoo. just walk, maybe even run

back inside, then position your men accordingly, and your just fine.