First of all I love the art of this game. The story is also pretty cool. Furthermore I think the "quick time events" (dont know if it counts to that) gave it a little kick. The only problems I had was that the player was invisible while walking and after the second time Rafael and the mother went to grandmother the game froze.
All in all the gamedesing was very good, aswell as the art and ofcourse the animation. A really good game with some fixing ;)