Comment by iqp

I understand, no disrespect meant to Poland - I've edited my answer to not sound disrespectful. My grandfather on my mother's side was Polish. It was just an awful trip. I guess I had built up this romantic idea in my head about night trains, but the reality is that the they are extremely noisy, so you should at least pack some earplugs. Also, the security warnings by the train staff made me nervous.