They all proclaimed it the worst pizza ever
Reasonable. It is usually very very bad
In the decades I've only known two maybe three good places. One was in Ochota and was excellent. The owner had won a prize for the best pizza in Melbourne before coming to Warsaw and opening it. I think it's recently closed unfortunately. His pizzas were the best I've tasted anywhere. They were the opposite of normal Polish pizza (i.e. very good). Perhaps they were just too good for the local market.
The second was a place in the starōwka in Toruń which only had two types of pizza, with mushrooms or without and had long tables that everyone day together at (almost the opposite of any other public place in Poland). To drink, they only served barszcz. There were queues outside however it was over s decade now and I don't know if it's still open
Neither had any ketchup in sight.
The third is our local one right in the North of Warsaw. Their pizzas are good. The owner is Czech.
Odd that Poland has something nice like zapiekanka (though I've seen people ruin that with ketchup often enough) yet in a country of 37 million, they can't do a pizza.
I've also seen lasagne like a wobbly blancmange cake and some pretty bad pasta dishes
One of the things I miss from home is bolognese pizza, a Leeds speciality. Or maybe I don't miss it since in Poland it would be a tasteless dry smear probably containing pork and ketchup.