As I recall, when I was a teen, my mom moved to Stonestown Apartments in San Francisco. There were two doors on most of these: one to the kitchen, and one to the living room. Same with ours.
The kitchen staircase led to the garbage bins, which could also be used to reach the ground. The living room one, which was adjacent, led to the "main entrance", also leading to the ground.
I recall I was there for about a year. After I left and went off to university, my mom moved again, into the avenues (I think it was around 6th Avenue).