In a word, perfect. Great situation, really close to every nice downtown places (bars, restaurants, shops etc..) and quiet at the same time. Exactly as you can see it in pictures: modern, cozy, nice furniture, comfortable. Joana is a perfect host, everything was clean, she accept our imprecise arrival hour (we arrived by car) even if she was far from Lisboa and adapted herself to our plan, and as a bonus we had juices and coffee for us, which was very sweet from her.
I definitely recommend staying at this place if you are going to Lisboa.