The abuse was discovered in connection with the girl telling her father about the abuse.
According to the verdict, the abuse had lasted for two years.
The now convicted man, who is in his 40s, has children himself and the girl was a playmate of the man's daughter.
They often played and the relationship between the families is described as good.
Sentenced for his refusal
It was in connection with the girl sleeping over with the convicted man's family that she was raped repeatedly.
The man appears in the criminal register since before and has been convicted of two cases of sexual offenses against young children.
He is also said to have sexually harassed another girl.
The man is convicted of aggravated rape of a child and sexual harassment.
He denies any wrongdoing.