1987. It was still communist.
Friendly enough, but rather obsessed with an inferiority complex, and the question of whom they hated more, the Germans or the Russians.
Since my best friend in High School was Polish, most of my girlfriends Polish (my love a Ukrainian born in Poland), my granparents caregiver Polish, and, it being Chicago, my home town very Polish, etc. I'm not sure my impressions weren't compromised because very little was new to me. I did like the sense of history (e.g. the broadcast of the Hejnał mariacki), and the care the Wawel, the reconstruction of Warsaw etc. received. I prefered Krakow, btw., especially with the city wall parks.