We, 3 girls, spent 5 great days in Porto! Sofia's apartment is located in one of the most beautiful parts of Porto, very central and you can say next to the river, only a few steps away. A lot of nice bars and restaurants are around the location.
Sofia is very nice and the communication and arrival/departure was uncomplicated. She gave us a lot of nice recommendations.
The apartment is perfect for 3-4 persons and the kitchen is fully equipped. There are also a lot of towels and a hair dryer. The only kind of negative thing - that was okay for us - is that there is some mold on the walls in the apartment. However, I guess this is normal in the older houses located close to the river or sea.
I can really recommend this apartment and would stay there again.