Apartment is very central however like most of Lisbon it’s up a steep hill so be prepared to walk. It’s 15-20 mins walk to most locations and metro and overground train station 5 mins walk away. We stayed on the ground floor which we were thankful for after seeing the steep vertical staircase leading the apartments above.
The apartment has two windows at street level and a balcony so you won’t get much natural light or fresh air with the middle room windowless. Facilities are basic but fine and it’s quite a narrow and small bathroom. Overall was a fine apartment for a few days.