Found this place by accident, close to our hotel (Maksymillian). It's down an alley and not obviously a restaurant. The staff were welcoming. English not a problem. The restaurant offers good, wholesome Polish food and drink at very reasonable prices. For example I had borscht with dumplings followed by spare ribs with sauerkraut plus a beer for just over 20 zloty! The only downside is that it's a little way from the main square and is easily missed, but it's definitely worth the effort.