Example itineraries by travel guides of Travero, a tour operator to Poland

10 days - nature and monuments

8 days - from Baltic to Tatras

5 days - Cracow - Unesco sites 

3 days - Cracow and Wieliczka

10 days - castles and palaces

8 days - in the footsteps of the saints

5 days - sanctuaries of Cracow

3 days - God's mercy