Just back from a break in Krakow and we did the Free walking tour of the Jewish Ghetto and Kazimierz, well worth the energy of a walk around. We had Pawel showing us the area and he was very informative of the all of the points of interest.
This is quite a fast paced tour so not for someone with mobility issues.
They gave some very good recommendations for places to go and see and restaurants to check out if you wanted to try some local dining.
This tour is a must if you want to see Krakow and the Jewish Ghetto