We were 8 friends during this trip and we had a very pleasant stay in Pedro's house. It's pretty, calm, close to the center of Porto and bug enough for us to be comfortable.
Just a little note, as it' is a big house, it can get pretty cold in winter time so I'll advice you to turn the heaters in the room in order for them to get a bitter warmer. Outside of that point, the stay was perfect ! Thank you Pedro :)