Oh, it's a little secret place, not so easy to find out. But locals know it well. When I was there (in the morning) it was busy, all (a few) tables were almost always full of locals.
You can drink a cafe (many kinds), beer including... hot beer (haha, is it Polish speciality? it's beer served hot with added bee honey and cloves - smells great and tastes good especially in cold days), juices, tea etc.
Eating here? Hmm... it's not a restaurant but you can choose various ice creams, pancakes (= flapjacks), goufres (is it in English?), cakes.
Favorite Dish: Cappucino Wloskie (Italian Cappucino)
Espresso - Macchiato (cafe with a litlle milk foam)
Grzane piwo (hot beer)
Ciasto z galaretka (cake with jelly) - I ate one with strawberries - delicious (rather not low calory diet haha)
TelePizza serves delicious pizzas in great variety and always gives good promotions (buy 1 pizza, the second is free haha - better go in a company there - at least 4 persons recommended).