Caffe Astronauta, right across Coliseu do Porto

It is small family café bar/restaurant. I loved the food and the hospitality of the owner. The atmosphere is warm and the whole family works inside. They have an offer of a menu for 5 € in what is included: main meal (francesinha, chicken, codfish, fish, steak) + soup + drink (super bock or coca cola) + coffe in the end. The food is delicious and the offer is really, really good!