Depends on how far away the neighbors are and how fond you are of them.
I’ve fired an FAL and can say that the recoil is less and follow up shots are faster than my with Mossberg 500. On the other hand, the muzzle an FAL enters the room about 2 or 3 steps ahead of you and doesn’t do corners nearly as well as a shotgun with an 18.5 20 inch barrel. At home defense ranges a shotgun packs a lot of power in a light, maneuverable package.
If I didn’t live in an apartment though and conceivably might have to engage targets beyond 20 yards AK or AR might be my choice for home defense.
If you are planning on going around corners with any rifle or shotgun, you might want to reconsider. It would really suck to have your gun taken away from you in the middle of the night.
Either use a pistol, or stay put and let the bad guys come to you.