一週間フレンズ | Week 2 Discussion

page 19
駅前にクレープ屋さんできたんだっておいしそうだね
I’m not sure about the bolded part. Is it た-form of できる (to be made; to be built​) + んだ to convey an explanatory tone + って? I guess the って confuses me again :sob:
So does it mean something like As for the crepe shop in front of the station that was built, doesn’t it look tasty?

page 20, title
こう見える
I don’t get what こう means…