I'd avoid Chlopskie Jadlo (and offshoot Polskie Jadlo) as the quality is pretty poor
I have always had an excellent dining experience at Chlopskie Jadlo .... the food and service has been first class :o)
Check out their website .. chlopskiejadlo.pl/main.php
good quality food here .... mmmmmmmm makes me wish I was in Krakow and not London !!