I bought this book before my trip to Thailand and I have to say I was rather disappointed.
Firstly it is important to realise that this book is definitely NOT for you if you are a backpacker or just a more economical traveller because the emphasis really is on higher end accommodation. The author's main interest is finding trendy boutique hotels which are rather expensive. There is a small number of cheaper listings, but when there are comments such as "there is plenty in this area for the budget traveller looking to rough it on $20 per night" then you know it's not up to much: I never spend anywhere near $20 during my whole trip and in fact for less than $10 it is possible to have hot water en suite and airconditioning! Secondly the book is written in a different style to other books I've seen; it's more of a travelogue which document's the author's trips and so some places are very sparsely covered. The writing style is good and where the coverage was better this made for an entertaining read, but that isn't really what I was looking for. Finally the maps, of which there are few, are more or less useless. Barely any of them are detailed enough to find even the places listed in the book, let alone navigate a town.
I have been fairly negative in this review but it must be said that this is a well written and informative book in the sections that are well covered. If you are planning more of a luxury trip then it is probably very good but if you are aiming to travel more independently and take budget or mid-range accommodation then look elsewhere.