The book focuses on the interior design of several Moroccan houses, owned either by foreigners or locals. As such it shows Moroccan design more on a case study basis, rather than explaining in depth the basics, fundamentals and principles of it. It is complemented by very nice pictures throughout, and while most are - true to the title - of the interior, one gets a fair overview of what these same buildings look like from outside and where they place in the environment.
In typical Taschen style, the book is tri-lingual (English, German, French), however the script for all but the French introductions (perhaps that differs by edition) is tiny and is best read with a magnifying glass. It has a very Taschen untypical introduction - namely instead of the usual 2-3 pages per language, which just provide the barest of brushes on the surface of the topic, this one is quite extensive (of course relatively speaking), being all of 36 pages long.
As noted by one of the previous reviewers (in great style, I might add), the book will tend towards the pretentious and some of the statements are fairly airy fairy - although after reading how well these are pointed out in the other review, it would be churlish to detract a star from the book for this added 'entertainment'. In any case, you will get a picture of some nice, expensive Moroccan mansions in the book, together with views of their inhabitants, together with the inspiration that might provide you with but will not really see the homes of more ordinary Moroccans (on the whole) or what a more bare bones Moroccan design looks like - just so you are warned of what you are getting.