From the perspective of feng shui metaphysics, what kind of bed is good?

Both will do. Generally, it is better to choose the first one. It is forbidden to pile up sundries under the bed, such as cartons for shoes and socks. Clean the bed regularly and keep it tidy.

The bedside should not face west, and it is best to put it north and south. Never look at the bed in the mirror. ...

I won't elaborate on other things.