We stayed here as a group of 3 friends and it was the perfect size for doing so. The bed and the sofa bed are very comfortable, the apartment is spacious enough if you are out for most of the day. We were staying when there was a music festival nearby which meant it was quite loud in the apartment until 1-2am, but this was just down to the timing of the dates we stayed.
It is a 30 minute walk from the main area of Porto which can be a lot when it is very hot. There isn’t much ventilation so the apartment can feel a little damp/ humid, there was a dehumidifier which helped with this.
Overall a great stay for a small group spending the weekend in Porto.