The author was no historian.
This can make a quick read/listen if you know nothing about the history of Turkey. But it's not a good source if you care about getting the facts right.
For example, Hurrem Sultan (the wife of Suleiman the Magnificent) was born in a place in the Kingdom of Poland, which nowadays is located in Ukraine. I suppose you could say she was Polish or Ukrainian. But the author maintained she was Russian. Why? Maybe because the book was written during the Cold War, and Ukraine was part of the Soviet Union, and Soviet = Russian according to the author. That would be my guess.
In another example, the author claimed Nakşidil Sultan (the mother of Mahmud II) was the same person as Aimée du Buc de Rivéry, a French heiress who was lost at sea in her youth (and more importantly, was a distinct cousin of Empress Joséphine Bonaparte). This is widely believed to be an urban legend of the day, and no serious historian would back the claim. But the author just kept hammering this as a fact, and told a bunch of stories of Turkey-France connection just because the two powerful women were related.
In short, you may find it interesting or kind of exotic in the way it describes Constantinople and the extravagances surrounding the Sultans. But if you care about history, try more serious books like the Crimean War by Orlando Figes or The Fall of the Ottomans by Eugene Rogan.