A great, central location with a tremendous view! The place is incredibly clean which is a top priority for me. Fabio went above and beyond in ways like supporting us during our stay and was even helpful enough to help us find the right place to get COVID tests for re-entry into the US. I would definitely recommend the spot to friends going to Lisbon for the first time. As others have noted - the place is right outside a social hub. You will be able to hear people at the front of the building from around 1pm-2am or later each night. We were there on quieter nights - Sunday/Monday - but still found ourselves finding the place noisy if not in the back room where one of the two bedrooms is located.
Also, it is a pedestrian only street and you will half to bring your bags down steps from a busy street to the entrance of the building to go up two steep flights again - Fabio was great and helped us carry our bags!
Just to keep in mind for some travelers who might want extreme flexibility and little engagement with their hosts - it's a small team working on a few locations. They were not able to provide information about luggage storage before check-in or after departure until the day of leaving little time to plan. Additionally, you will have to check in regularly about your arrival time since there is no one there all the time and you must be met to be let in.
A great spot to enjoy Lisbon from for a couple days!