I gave it an 8, mainly because Seasons 4 and 5 never were better than a 5. IMO, it looks like those who are most displeased were looking for a more action-oriented show. I enjoyed it because it's the first episode in a long time with any substantial dialogue:
Jamie/Brienne, Jamie/Edmure, Brienne/Blackkfish
Hound / BwoB
Tables turned on Cersei
"and I'm going home."