Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One of the best books I've read lately

It's great, one of the best books I've read in many months, it kept me thinking to solve the mistery, and every time I re-read it keeps me intrigued. The only "but" is that the action happens in the 90s, but when I began to read it, it seemed to be more properly in the late 60s or early 70s, so it was a bit disappointing discover that everything happened in our days.