Thanks for the reply, I did not know of that tool.
I ran the inspector i MM, which did reveal a lot of flaws. It did however recognize the hole in the model as it should be, so I still don't know why CURA wants to print over the hole. Maybe it is simply a poor model, as it was exported from a building model not made for 3D-printing.
2019-01-20 09_37_06-Autodesk Meshmixer - Kiosk_E00_v2.stl.jpg