Is parking avaliable at the station for about 4 days?

There's a parking lot managed by Pay by phone.

Probably not. However, something s are over- looked. I would not recommend this. You receive a ticket or worse get towed.

there are plenty of parking, I do not know if over night is allow

I didn't see any

Yes. Very safe

Absolutely my friend, come on over, and be at peace.!