Warsaw has a version of restaurant week and we participated. You prebook your table and meal for about $30-40 each at one of about 40 restaurants, and go and enjoy. Meals are three courses plus a drink and sometimes an amuse bouche.
We liked the menu at Magari, a hotel restaurant downtown with a terrace, so we went. Andreas had the pasta and I had the steak. Mine came with peach soup! It was interesting. I am also going to have to do my watermelon with a balsamic glaze, because it was delicious. Everything was wonderful, and we will go back soon.