omg, sorry, Bydgoszcz is so bad that i've forgotten about this city's existence xD only Mill Island and Old Market looks somehow acceptable there.
Warsaw. But I do really like Wroclaw, Szczecin and Gdansk too. Krakow would've been really good if it hadn't had so much pollution. Cities like Bydgoszcz, Poznan, Lodz are not my type.