Good. Does not even come close to describing it. The show is amazing. Just two warnings before you start;

One: Do not look up ANYTHING related to the show online. Not even funny pictures or stories. YOU WILL COME ACROSS SPOILERS.

Two: When you DO watch it, NEVER expect ANYTHING good to happen. FOR THE LOVE OF GOD AND ALL THAT IS HOLY, DO NOT EXPECT GOOD THINGS TO HAPPEN. YOU WILL BE TURNED INTO A VERY SAD PANDA IF YOU DO. EXPECT BAD THINGS. VERY BAD THINGS.