The place is located very close to a viewpoint from where you can see the whole city (especially great during sunset). It's also close to the tramway line 28 which takes you around the city.
The subway is about 10 minutes away on foot, or less if you take the tramway or the bus next to the apartment, but you can also just walk to the city center which takes you past many famous places and areas.
There are also some great restaurants nearby (the grilled chicken at "Tropical da Graça - Churrasqueira" was delicious!).
The rooms were clean and everything was as described, late check-in was no problem and the host Cláudia was always quick to reply.
We had a great time!