I think a product review is more accurate if based on the reviewers personal experience rather than the key features of the product!
YES! I agree! So many people give products bad reviews because it didn't have a feature that they want in a product. That doesn't make a product bad...if you buy a car and say: "it doesn't have enough room for my entire family" who's fault is that? Should have purchased a van...
Before we buy a new gadget or try a new restaurant, most of us look at the reviews.
Include relevant details, and omit the extraneous ones. "Good" is not always positive. Remember, a "good" review is the type of review that's useful to the people who come along behind you. Even negative reviews can be useful if you address why you think your experience unfolded the way it did. So always write good and bad both.
The first important thing is that you should give as many information about the product as possible such as sizes, features, delivery infos, results etc. Buyers want to know exactly what they will get, so you have to give them what they need.