The show is good. Quite a surprise for me actually.
No, it's not perfect, the American actors seem to not know what they are saying when speaking Portuguese, some actors have a very stiff face and don't give off any facial expression and some lines are delivered in a strange/rushed way, the English parts of the script seem to have been directly translated from Portuguese at times, creating odd expressions, the soundtrack is incredibly repetitive and all over the place (definitely the weakest spot of the whole thing) and the first episode was confusing, which, to be fair, the exposition for such a branched plot was never going to be easy.
The story, though, that is what ultimately matters and it is a good one. It has good character developments, interesting side plots that let the viewer feel what it was like to live at that time in Portugal and interesting/unpredictable plot twists. The cinematography, costume/production design and grading were also on point.
Ultimately it was an enjoyable time. The flaws, while there, did not distract completely from the main story which has still room to grow on a second season.
P. S. Please ignore any comparison of this show with Portuguese Soap Operas, the actors are the same, yes, and they did bring some of that background but, apart from that, the show is nothing like soap operas.