Horrible! That's one more reason why I'd like to come back in time: to see how my family lived and how did original Danzig look.
I'm interested in question of assimilation when Danzig became full-Polish. Grass doesn't know, because he didn't come back. I'm interested in this all not so long, maybe I'll find stories about it.
And now I know where are you from. I suspected it's not so far away!