I'm guessing four. If we're lucky maybe 5. I feel like Netflix cancels shows after four/five seasons

I'm hoping we get all 8 season for all 8 books. But waiting can be a pain. Maybe they can condense the stories combining two book in one season so we get 6 total?

I think that'd be best. Otherwise there will be another time jump or something as we wait for Francesca's story if it follows the books