I haven't read any other of Murakami's books, so I don't have any experience of his style or writing ability. From some of the other reviews here, this seems to be one of the weaker works in his canon.
That said, I liked it, and will certainly search out some of his better reviewed books. The Amazon product description kind of says it all in terms of plot. Though I might disagree with the comment that it was subtle, I wouldn't class this book as practically subtle, you know where it is going right from the start and it is fairly unapologetic about that. Neither was the characterisation amazingly subtle, but considering the book is only about 50,000 words, it was expertly handled.
It's always difficult to comment on the writing style of a translated book. But I thought it very good, it was clear and precise, with enough embellished language to prove the writers skill, without detracting from the story. I would have loved to be able to read it in it's original language, but I get that feeling with every translated book.
The violence I did find very strong, but I was expecting it and most of the book is a slow build up towards it, preparing the reader for it. If you are not in possession of a strong stomach, then maybe this is one to avoid. I have to say moments of it made me wince, but nothing wrong with that, it just shows the writer's skill.
In the end I read it in two sittings, but only stopped the first session due to late night tiredness, otherwise this is certainly a book that could, and dare I say it, should be read in a single sitting.