All 7 episodes were great, however fair warning folks, there is a "3rd and final" season coming later this year -- which because it's Netflix actually means they've filmed it all, this is a 14 episode season that they split in half to air the 2nd half later. It ends on a cliffhanger without a conclusion to the story. Like I said the 7 episodes that are available are excellent, in many ways I would say better than S1, BUT... if you are patient and actually want to binge the whole of what is actually S2... you could hold off until the next (and apparently final) part drops.
Not a huge fan of this new Netflix trend of dropping "partial" seasons. Either go back the classic style of an-episode-a-week or drop full seasons!

.
They are calling this Season 2 and Season 3 but like I said, it's clearly Season 2A and 2B.