Carlos is a very friendly host. I was very impressed with his welcome to Porto with maps and suggestions of what to do and where to eat. It was a great help and made me feel at home. Be prepared to walk up two flights of stairs as there is no lift. Carlos keeps his place very clean and his house rules ensure that guests keep it that way. The apartment is in a good part of town with some good local places to eat. On my last night I enjoyed a cocktail at a nearby hotel overlooking Porto at sunset. Carlos will tell you where it is when you stay.