FYI, this can also be written in one statement: 
return new Feedback()
{
    feedback.Content = entity.Content,
    feedback.AnswerId = entity.Answer.Id,
    QuestionId = entity.Question.Id,
    User = UserEntityToUser(entity.User),
    FeedbackType = entity.FeedbackType,
    FeedbackState = entity.FeedbackState,
    CreationTime = entity.CreationTime
};