Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Puff

The first half of this book is an intellectually insulting description of why you should invest in real estate, chapter after chapter covering what could have been said in a few pages. The second half of the book is better, but spends too much time talking about investing in New Zealand. The book oversimplifies investing, without digging in deeper on issues like operating costs for duplexes versus apartments etc. The book advocates maximum leverage without covering risks like rising interest rates, unexpected costs etc. The only useful info I found was in the discussion of internal rate of return for comparing investments. Don't expect any guidance on what costs you will really incur operating a property.