Are there a lot of traffic rush? These might be stupid guestions but I haven't ever been in Poland.
Dude dont worry, i moved to Krakow from Denmark 5 months ago without ever being here. But believe me you are gonna love it!
For around 1500 PLN pr month, and even less you can get a nice apartment in Kazimierz (i live there) its an amazing place to live, close to everything.
It all depends though were will you be working here in Krakow? I dont think the traffic is so bad if you use public transport, bc they have certain routes were cars cant go so you get back and forward quiet fast.