The location of Luis’s apartment is perfect.
The apartment is in -1 floor and has only the windows you see in the photos, which are looking to the wall near than 3 meters. All the day were drilling and building the next building, so you can not open the “windows”.....
We had only one day in Porto, and we hade to wait brother of Luis more than 1,5 hours in the building’s hall.
So, be ready to receive answer from Luis after two days, do not ask him nothing and do not wait them on time.