We did, unfortunately, not get to meet Maria personally, but she organized everything perfectly so that we would have no problems enjoying our stay to the fullest. Her friend Marta waited for us at the agreed time to hand us the keys and the place was spotless upon arrival. Maria's apartment is nicely located within the artists' district and about a 20 minute walk from more touristic spots of Porto. The interior is cozy with lots of natural light and as portrayed on the pictures. Highly recommended!