Mario's apartment was stylish and perfect for one person staying in Porto! The location was excellent, as it was close to many bars and restaurants, as well as very close to the metro and monuments for sight seeing. The studio was equipped with all the amenities one needed for a short stay in Porto (I stayed for about 2 days), and the apartment felt safe overall. The only downside is it is located on a pretty steep upward hill. However, much of the city is hilly, and this adds to its charm. If you are carrying a lot of bags, I suggest you take a cab to the apartment.