The place is great.
One issue we had was the fact that we had experienced occasional power outages. This was especially when we were using power in more than 2 rooms and due to the old infrastructure; quite typical in old Portuguese buildings. We had to routinely go downstairs, find the unit's power box and reset the power.
It would have been nice to be advised of the power issues and how to manage them on check-in.
Would we stay here again? Yes, knowing the issues and how to manage them.