This appartment is a perfect place for your visit in Lisbon! We stayed here for one week and we were over the moon. The location is very practical and accessible, it is walkable from the center, metro/bus/tramway are also around the corner. The area was calm and safe. Very steep (street and stairs) but not a problem at all, almost every street in Lisbon is like that anyway. The studio also has everything that you need which makes it perfect especially for a longer stay.
Ian is a great host! Very helpful, kind and replies really fast. The communication really went well even before our arrival date :-) We loved every bit about this place.
Don't hesitate to book!