I was a travel agent for 23 years - in my late, lamented youth - and prepared many European trips for clients. I wish then that I had had a book like "DK Eyewitness Berlin" to work with. These books, which come out yearly, are the best, most complete siteseeing guides produced today. They are mostly siteseeing because while they give a few suggestions for restaurants and hotels, the books' publishers realise that those things are covered by websites devoted to up-to-date info on dining and accommodations.
"DK Eyewitness Berlin, 2019" is the latest in the Berlin guide series. I think this year's book is a bit lighter than in previous editions. The front and back covers are thinner than before, and that makes a difference in carrying the book with you OR committing burn/slash on the book, cutting out the needed pages. That's what I was doing with the books when I travel.
Now, as for the book itself. I go to Berlin every two or three years so I'm fairly familiar with the city and it's sites. The DK Eyewitness books cover the sites in great detail. They highlight small, out of the way museums and historic sites. The book is so detailed that a high school or college history professor could use the book in teaching the history of Berlin. By the way, the book is also available in Kindle.