The apartment is situated on the third floor of a traditional but recently renovated building. It has a great location and is well-equipped. It might get a bit cramped but the balcony gives it a spacious feel. Everything is within walking distance: the main tourist attractions, restaurants, supermarkets etc. Although it is situated in one of the busiest streets, it's still away from the crowds. You can hear noise from the streets but it's not disturbingly loud. You should know, though, that there is a music school in the building next to it so during weekdays you can hear a lot of wind-brass instruments. We stayed in the apartment while working remotely but it didn't bother us. Also the walls are thick enough so you won't be hearing much noise from the neighbouring apartments. Additionally, the Internet connection worked very well for remote work. All in all, a great Porto experience.