Perfect for Short/Mid-long stay
Well located, at 1 minute of the miradouro of Estevao (famous Panorama places), if you feel lonnely just go up there to meet kind portugese.
Alfama it's the old city, very nice and colourfull architecture, close to the metro station of Santa Polina.
To walk to the center of Lisboa (Plazza de Commercio/Bairro Alto) give a 15/20 minute walk along the Tage River.
Uber is also quite cheap, you can go from the Museo do Fado. Enjoy !
For the Bnb itself, it's nice alone or in couple, you have a lot of equipements for every days life.
And Maria & Filipe are lovely host, you will not feel alone if you have an issue, they are deeply kind and carring host