It is suggested that you hang chemicals on the balcony or cover it with thick wall curtains.
If the street lamp is not big, it will generally have no effect, because if it is too big, it will hinder the flow of life, but it depends on the shape of the street lamp. If it is knife-shaped, centipede-shaped, arrow-shaped and other unfavorable shapes, it must be blocked, but different shapes have different objects to block. However, the street lamps used for municipal construction now will not be this shape. So don't worry about whether the lights outside your balcony are ordinary.