Despite the inaccuracies, this miniseries is still watchable fascinating and well made. The story of the greatest discovery is so good that it makes up for the faults. The discovery itself is quite thrilling and one can really feel the joy.
One of the best points is the detail shown. There are lots of details about the financial, political difficulties regarding the dig. It does give some historical context to the time of the discovery. The question over what Egypt gets to keep and what the discoverer gets as a reward is interesting. It's not right that foreigners take away the historical treasures of any country yet the discoverer needs some compensation for their expenses.
Dealing with the faults: It wasn't filmed in Egypt and the sand and valley are darker and don't look like Egypt. It would have been tough to film in Egypt with all the instability since 2011 anyway. The romances with a Met Museum woman and Lady Evelyn Herbert are a little distracting but I guess if they didn't blow these up it would have been kind of like a documentary. There are some bad American accents of a few characters. Also Max Irons is too young looking at the time of the discovery - bit like Jonathan Rhys Meyers in the Tudors. But so what - he is watchable and actually is quite good here if you ignore the age thing - I can't think of another young actor who could have done a better job.
A little more of the factual elements of the curse could have been shown besides Lord Carnarvon's death. Some strange things did happen. Better than showing the romances.
If you enjoyed this - highly recommend a 1980 TV movie "The Curse of King Tut's Tomb", an excellent and exciting movie about the discovery and the curse. Forget about the more recent one with Casper Van Dien.
Quite a pleasure to watch despite it's faults.