A truly excellent place to stay in Lisbon. I stayed here because I wanted to be near Campo Martires da Patria and it was absolutely perfect for me.
I was there for two months and worked remotely from there. Internet is fast enough to support that, there's LACS Anjos coworking about 10 mins walk away, Agora yoga nearby (5 mins) is excellent, plus you can get right into the centre of Lisbon in a short walk.
I absolutely loved it and will almost certainly use this place again when I return. Sofia was also an excellent hostess and answered the (few) questions I had very quickly.