We were in Gaia/ Porto for 4 days, Ricardo and Silvia's airbnb is great, was really clean, good facilities in a quiet neighbourhood still walkable distance to the city center. You have good bakeries, shops in Gaia. In 10 minutes of the flat you have the bridge which leads to Porto. Ricardo and Silvia are very friendly and flexible hosts. We were uncertain regarding how many days to stay in their place due to decision to visit others cities around but the hosts were nice and patient with us! Highly recommended Ricardo and Silvia's place!! For sure if I come back here I will stay there again!