I just got back from Chile this week and use this book. It had some good info but I would not use this as your only guide book. I found three problems with this book.
1. Not many opinions. I don't want to be told that a place is "worth a try" I want to be told why it is worth a try...i.e. good selection, great steak, clean rooms etc.
2. It is out of date. It was published in May 97 and things have changed like prices, additions to national parks and attractions. I went to two hotels that were no longer in business.
3. Covered a lot of things and did not really go into depth on the major attractions like Torres del Paine National Park. It did not talk about all the trails, or hotels available or plus and minuses of them.
The book is okay but there must be better ones out there that are more up to date. At the beginning he had a suggested itinerary but it was too general. I would like to have been told straight up from the beginning that Torres del Paine is the most popular and spectacular attraction and to center my trip around it.