A nice restaurant with good food where I can take people for a dinner around 8 pm who will only be in Warsaw for a couple days? I was thinking sth at the Vistula river? Nowy Świat? Old town? Preferably Polish food but not necessary "zapiecek". EDIT: both the food and the location are important - I am looking for a place that is situated in a pleasant district worth seeing so that my guest can have a quick look / short walk around in the occasion.