We had amazing time in Porto, the apartment is great, situated very close to the city center, and in general, very close to anywhere you would want to get (+ metro right nearby). It is very light and clean, beautifully decorated and equipped with all the things you may need. Right next to the house there are a lot of nice restaurants and bars. It may be a bit cold in the winter, but a heater was provided, so it was pleasant anyway. Also, Maria is a great host, she provided us with a lot of tips: where to go, what to eat, which was extremely useful!