I finished the season and it's quite good.
With Netflix' track record I didn't expect much. I just hoped it would not be total crap, but now I like it and I want more seasons.
The characters are properly done with flashbacks to get their childhood and motivation behind everything. It's funny dialogue and situations, lots of action, some really sad backstory, some world and organisation explaining for the new viewers.
Also Zoro is pretty badass in the live action.