For me 1899 was a huge disappointment.
As I consider Dark one of my top 5 series I expected way more from it's creators.
Pacing is slow. I couldn't look past the language barrier between the characters. Unlikable characters. Weak character development.
Romances coming from nowhere and unbelievable.
Managed to watch almost 4 episodes before turning it off completely.
Also it seem to suffer from the "streaming service treatment", as in the show is stretched so it has a bigger runtime than it needs to.
I think the story overall could have been great and I also suspect that Netflix interfered with the production by probably setting some dumb guidelines.