Apt is well appointed, clean, nicely decorated, has a comfortable bed, and the charming patio became a favorite spot for us. Very good location for the tourist spending time in old town Porto. It's a bit of a walk to the metro, 15-20 minutes depending on you, but most of the tourist sights you can walk to, including across the river for port tasting.
If you're a light sleeper you can hear the bars music and patrons until late at night if you have the windows open, but it's not too bad. We would definitely come back.