First, the good. The acting was top notch, especially from Jenna Coleman, who was phenomenal! (I'm not just saying that because she is from my home town) The story was good, with some clever twists, and the scenery was lovely.
Now the bad. The directing. This let the whole production down. As others have mentioned, the pacing was very slow and the whole thing could have been shorter. What really annoyed the hell out of me though was the constant jumping backwards and forwards in time. We were getting flashbacks within flashbacks within flashbacks! This made everything very confusing and ruined the whole flow of the show. I would have rated this as an 8 if not for this.
Now the bad. The directing. This let the whole production down. As others have mentioned, the pacing was very slow and the whole thing could have been shorter. What really annoyed the hell out of me though was the constant jumping backwards and forwards in time. We were getting flashbacks within flashbacks within flashbacks! This made everything very confusing and ruined the whole flow of the show. I would have rated this as an 8 if not for this.