I have owned this book for many years. However, I never really studied it until recently. I had no idea what a treasure I had right under my nose!
The games are outstanding and beautiful. Bronstein's annotations are absolutely excellent. He has just the right mix of prose coupled with variations. Many of the newer works I have studied tend to get carried away with the regurgitation of variations, followed by some sign (such as +/=, =, or whatever).
Bronstein's book could almost be considered a middlegame manual. I have been surprised at how many positional ideas and concepts have been brought to life by re-playing these games.
I would recommend reading some middlegame books first such as Simple Chess (Stean), My system (Nimzovich), or Logical Chess Move by Move (Chernev). Then this book will be extremely useful and educational.
I think that this book is best suited for players with ratings above 1300-1400 (USCF).
You will not be disappointed if you buy this book.