Anyone know of a good place to rent bicycles for a day in Cracow?
Try this place:
Rick's Eastern Europe book also suggests Wypozcyalnia Rowerow Rent-a-Bike.
https://kmkbike.pl/ try this. for the first 20 minutes, you ride for free, but you are obligated to have a special card. Create a card costs 10 PLN (it is one off payment) :)