Yes

For spare parts, please contact our customer service department directly. https://helpcenter.galaxus.ch/hc/de/requests/new?ticket_form_id=39231

yes, should not be a problem.screw holes may be present and stability could suffer, but need not be.

Yes, is freely selectable. :)

No, without slatted frame and mattress.

No, the slatted frame is not supplied.