I stayed at this place for about a month and only have good things to say about it.
Location is as central as could be with a 5 minute walk to Terreiro do Paço.
Communication with the hosts was extremely easy and helpful (some lights had to be replaced during my stay and, once communicated to the hosts, they fixed it the next day).
Due to my long stay, they provided a free cleaning service in the middle of my stay.
As the evening begins, you might hear some Fado music from the restaurants near by but nothing that is too loud.
Would book this again!