USA, Canada / Can anyone give information to where I could stay for few weeks in Chicago? [6]

Hello!
My name is Sylwia Jedrzejak and I am a Masters student at University of London (GB). I have a question? ! I am writing my Masters Dissertation about Polish diaspora in the USA and I have to come to America to do the research at some point around June/ July. I was wondering if anyone could give me some information where I could stay for few weeks in Chicago? I have never been to America before so I would be greatful if anyone could help me with that!!! Olso, maybe someone knows where to go in Chicago to do the interviews with the local polish population? I would be greatful for any help!!!!

Thank you so much!
kind regards
Sylwia Jedrzejak