I recently got this book, and I am enamored.
It is very easy to use, and anyone who has any experience with tracing patterns will not have any troubles with this one. The instructions are very clear even though they are in Japanese, the illustrations are completely adequate. Yes, I do have a fair amount of sewing experience but I believe these to be suitable for advanced beginners/intermediate seamstresses.
The garments I have sewn up so far fit true to size (using a similar size to what I would use in Ottobre), have been well drafted and stylish and everything went together nicely.
I look forward to trying more patterns from this book!!