Whether you are an author or someone writing a review, you are bound to encounter reviews you don't agree with. The thing to remember is that every review is an opinion. It isn't personal, and don't make it personal! As a writer, you get to decide which suggestions work for you, and which ones don't. As another reviewer, you can offer a dissenting opinion, as long as you keep your response respectful. You may think the reviewer in question suffers from a craniorectal infarction - but don't say it. Focus on the writing, and express your thoughts about that. Not about the author, and not about the reviewer. If you have an issue with the formatting that affects readability, such as the lack of spacing between paragraphs, or a font or color scheme that causes you eyestrain, mention it but don't dwell on it - it isn't part of the content. This will all help to keep the reviewing process a cooperative quest for excellence, not an adversarial process.