Perfect place to stay, easily big enough for 2 couples and right in the middle of all the key places to visit.
The apartment is well laid out, great bathrooms and easy to access. Being met was a bonus too.
As others have said, the lane is lively and noisy at night but the bedrooms are quiet so you sleep well. There’s lots of places within a few minutes walk to get a meal, coffee or groceries.
Definitely recommend this place for a Porto trip