João is humorous, nice talking, and good at communication. He, his house, and the cats are the best memories that I have in Porto. (I am so ashamed that I can't remember all the name for them at all.)
Nice location to everywhere in Porto, and it is just like João said, Porto, is not too big to know. The best way is by walking and to see, to enjoy it!
João also recommended some good restaurants, stores, nice places in Porto. It helps me a lot to know about this city. And also, the cats are really cute, anytime, anywhere, I love them all!!