Thanks for the info. The camp ground has been marked as closed two months ago, this information may take time to update on third party maps, but it's no longer visible on OSM. I clarified the status of the roads here on Ledholm - I believe Ledholmsvägen ends near the large shed and the rest of the roads are now marked as driveways. Added addresses for the properties as well.
About signs of private property and surveillance: these usually have no effect on mapping in Finland (jokamiehenoikeudet), it's quite common that access to some properties goes through other properties.