Catarina and Alexandra are extremely friendly and attentive hosts. They gave us so much information about porto in terms of what to see and where to go. The apartment is shared with two other rooms of airbnb guests, but you essentially feel like you have the flat to yourself. It is very clean and well kept we loved the place. Its a 2 minute walk to a big supermarket, the metro and the main shopping street. Most of porto is fairly walkable also so you can easily walk in to the old town.