when the mirrors are not being used, it is best advised to keep them covered with some curtain or veil.
Placing mirrors near the main entrance is highly advised against. Similarly, placement of mirror in kitchen is considered as unwise as well. These can bring unwanted complications.
North, as it also represents the water element. It makes the perfect balance and brings the most benefits of the same.
If your living room is placed in the suitable direction, as per mirror placement, then try to place it in such a way that it reflects positivity. It can be an indoor plant, window, sunlight exposure etc.
Ans - No, usually placing mirror in the southern zones is advised against. It is applicable for all 3 south zones- actual south, south-west and south-east.