Joh Wick was a great with good cinematics and even better choreography. It showed the fact that John was a leendary assassin who went into retirement foro a girl, who later then dies and in seeking revenge after a few events take place leading to his dog being killed, he goes out on a rampage.
I liked the fact that although they highlighted the fact that he was and is a great assassin he would bnever come out unscathed, showing that he too makes mistakes and isn't as quick basically telling that he isn't that good(I don't know if that makes sense at all).
Though th movie was great, I think that it wasn't extraordinary you know, like it wasn't different from your average assassin/revenge plot so there wasn't really anything spectacular about it. That however doesn't change the fact that it had a great casting(I think Keanu was perfect for John) and great cinematics.
Overall I'd give it a three stars. Would recommend if you can get past it being very formulaic.