Instruct: Classify Amazon reviews into positive or negative sentiment
Query: nice book shelf

We bought this for my 2.5 years son. We put the books he likes the most on the shelf and it's just working very well. It's easy and convenient for him to pull the book out and put it back after reading. It's the right height and size for him. The shelf looks beautiful too, good enough for the price. The only problem is it can't hold very wide or tall books, but it's in my expectation by reading the reviews before buying.