We (two couples from the Netherlands) have stayed for four nights in this apartment.
Susana was out of town, but has arranged a good welcome for us. The apartment looked and smelled very clean and looks exactly the same as on the pictures.
The citycenter of Porto is easy attainable by bus (10 minutes) and by walk (around 20-30 minutes). A very pluspunt of this apartment is the short distance to the Lidl, where we have bought food and other stuff.
Although we haven't met Susana in real-life, she was very kind in answering our questions by phone or by mail.
We would definitley recommend this apartment for a comfortable stay in Porto!