The drama is very well done and an accurate representation of the life of The Great Sultan Abdul Hamid Han. It exposes the truth of the ones who called him a so called 'Red Sultan' and shows what games were being played to defame the entire Muslim Nation. 10/10 would recommend, a too good and historically accurate show.
Edit: I am on one of the last episodes of Season 3, and unfortunately, this drama has fabrications as well. I have spotted a major fabrication. Fuad Efendi, who died in 1936 (18 Years after Abdul Hamid) is shown to be killed by Ahmet Cellaletin Pasha i.e. he is killed in the lifetime of Abdul Hamid. I am not a historian, and who knows how much fiction this has, but as far as my knowledge goes, the drama is 99% accurate till season 2 and the fabrications start rolling in in season 3 (about 80% I would say.)