Wroclaw or Krakow or Bialystok to study in Poland?

edit : Szczecin is just for one semester.
I want to come for whole year/2 semester so I eliminated Szczecin.

So go to Wroclaw. If I was your age I'd love a year there. A great city to be in, a good student scene. What's not to like?

Yes you can right, but most of the people recommends Krakow.

Do they know what they're talking about? Have they lived in Poland and do they know both cities?

The people here who have lived in Poland and know both cities are telling you that Wrocław is the better option.

But listen to random people who may or may not know both cities if you want....

You're right.

Wroclaw is better option.

My 3d option could be Bialystok, Bialystok University of Technology. Would you recommend it?

I don't know enough about Białystok to say, I've only been there once many years ago. I didn't much like the town, much of it had a distinct.... non-Polish feel (not necessarily Russian but not really Polish). It was also like stepping at least five years back into the past from Warsaw (or western Poland).

People that have spent more time there more recently would be able to give you a better answer.