Instruct: Classify a review into positive or negative sentiment.
Query: disappointing

I bought the six volumes because of the positive reviews by by experts. However, I agree with some of the critical consumer reviews that the text contains too many details thatr sometimes obscure the main events and that Malone sees Jefferson as a great man with hardly any faults. I think that Jefferson is a very interesting, important and enigmatic man and I have tried to find a biography that is more balanced. I doubt if ther is such a biography and that is very odd. Has no historian been able to do him credit?