If you can't navigate in Polish on krn.pl, our website has lots of long-term rental offers in Krakow advertised in English, property-krakow.
If we don't have something fitting your criteria, we will be happy to help you it for you
Try not to use Estate Agents, as they will charge you alot.
For Example, i used an estate agent when i first came here, the charges are as follows;
To register with them = 700pln
Finders fee once you have agreed on a property = 1900pln
When you add that to deposit and month in advance rent, it can be a costly adventure.