I personally think that Dark Soul is a great game. I would not call it a mastepiece, but it´s a very very good game.
I believe it´s a bit inaccurate to say it´s a bad game. It would be more accurate to say that the game simply does not fit your tastes.
I feel the same about Grand Theft Auto 5. I just can´t appreciate that game, but I do admit that it´s truly an excellent game. It simply does not fit my gaming tastes.