I'm living in Poland my whole life and if I could add something to your list it would be :

• most of people are very pessimistic and conservative
• traditional polish dishes are amazing
• in smaller cities/villages you could have problem to find someone who spek english

I hope Poland isn't so bad if you're living here few months and didnt move out yet.
In my opinion there is many better place to live in Eyrope but also there is many worse places