Poles don’t eat Polish, or hardly at all. Restaurants that specialise in traditional local cuisine are far in between (except in the tourist areas) and it’s much easier to find Italian or Middle-Eastern food.
In that regard, Varsovians and Berliners are pretty much alike. In other regards they are not. One city has clean streets and friendly, considerate people… and the other city is Berlin.
It really is amazing how Berlin looks much more like what I expected Warsaw to look. Sure, both have their fair share of shabby old buildings, but Berlin is the city with rubbish piling in the streets.
The Warsaw locals I interacted with were friendly and helpful and the younger ones have a decent command of English. All-in-all a nice city, I can see myself coming back.