The apartment is amazing! Clean, quite, well equipped, close to the subway station, though it's also easy to get almost any place in the city center by walk.
It's not big, but the space is organised in the way you feel like there are a few separated rooms.
Pedro is a really good host, he gave me so many advices and recombinations that I couldn't even do it all in a week, still keeping some for the next time in Porto :)
There was a light issue in bathroom (previous guests didn't report it), but it was fixed asap.
Bonus point: if you're not into espresso cult, there's a lovely coffee place nearby called Alambique.