There is a simple way for you to judge the orientation of the house you describe, that is, look out. As you said, when you get home after the elevator goes upstairs, your door should face the elevator room or aisle, but standing by the floor-to-ceiling window, you can see the west, and downstairs is the community garden. But you didn't describe whether there are other buildings that can block you when you look west through the window. If there is no shelter, the west side of the house will be big, and it should face east and west. If there is shelter, the west side of the house will be small, and it should face east and west.