I have a lot of mixed feelings about this book.
From pluses:
It actually goes from very beginnings to the end of 20th century in history of France, and it does at least mentiones all the important events. There are also a lot of additional super interesting info about some details. It is quite well written and if you are even a bit interested in subject, it is simply a nice read. For me, it let me fill some wholes in the knowledge, and it made me want to go from this book, which is generic and not precise, to others focused on particular bits of hisotry that I want to know better.
BUT:
1. I don't think it is possible to read the book withiout actually knowing the general history of France - there are non stop mentioned people or events without actual context nor the summary (or the profiles in case of people), and this is incredibly annoying and frankly contradicts with the basic idea of the book, which should be informative in the first place.
2. Historical mistakes! Will the book make your knowledge corrupted and false? No. BUT, not being a history expert at all myself, I did find at least couple inaccuracies or simply false information. And while the fact that e.g. Abelard and Heloise story in the book ends with some information missing and some being not true will neither is that important, nor makes that much of a difference, I really think that in the history book facts and dates should be double-checked and simply BE ACCURATE.
3. The French quotes without translation - I did read it in other reviews, and I agree that it is simply ridiculous and annoying to reader. There are VERY many French-only quotes, without any translation, moreover, there are also sometimes sentences with sole one word in French, again without any translation. It is not only annoying, but also makes the book at times very hard to read. Also, as I do speak French myself, I can judge that not all the quotes would be understandable, as some of them are older-french, some are coloquial etc.
4. The author, especially towards the end is plain biased. And while I do think that comments from authors are very interesting, the bias in this book goes way beyond that - the historic events are many times just described and introduced in a very one-sided way.
5. Especially after 18th century, many VERY important events are just not described AT ALL. And while I know that it is simply not possible to describe everything in the same detailed way, the proportions are sometimes ridiculous - there is literally a sentence about Dunkirk, while the description about where exactly Germans moved while occupating Paris lasts for at least two pages.
6. There is definitelly too much focus on Paris is a book that should actually be about FRANCE. Especially before 17th/16th century it is just plain wrong to focus on Paris, while the power was not centralized there. Moreover, there are very many too detailed descriptions about Paris, including even adresses of places in Paris, that do not make that much difference for the story, while there is literally no description of any other city in France (while there were actually times where it was somewhere else, not in Paris, that the history was happening...). From this you can sort of see that, since the author did write before the book about Paris history, that he just used bits from it, instead of focusing on the France at scale.
7. Solely personal, but, especially towards the ending, the author sounds to me just plain pretentiously. Even not counting his personal anegdotes about "when I met Mitterand", instead of sticking to the facts, he has the tendency to fly away with his "philosofical" questions and biased comments, sometimes being even actually bit offensive towards French people...