This seems to be a divisive one.
Personally, I loved it... It had a slow start but I appreciated how much atmosphere was built before the series properly gets going. The first episode almost felt like a horror ... tense & claustrophobic ... whereas the rest of the series gradually becomes lighter, funnier & more energetic.
It is beautifully shot, beautifully dressed & beautifully performed. The young cast are fantastic. I hope to see them in many future things. The score is also stunning!
This series has an unusual tone that's difficult to place... It can often seem like a traditional (but very well done) period drama but then surprises you with a modern flourish or wink to the viewer... It's like The Crown with moments of The Great.
I'm not bothered by any creative licenses with the real history... the show doesn't seem to market itself as a literal account, & I'd rather be entertained than educated in this instance!