We really enjoyed staying at François' apartment that spans 3 stories. It had the most amazing view from the rooftop terrace with sunshine in the morning and until early afternoon. The apartment was very delicately decorated, clean, and the beds were comfortable.
We were a group of 4 colleagues there for a conference, and aside from one unfortunate soul we had en-suite bathrooms. It is easily suitable for 3 couples traveling together (or less).
François was easy to get off during booking and pre-arrival with tips to getting there as well as recommending some dining options.
If I were to saying anything remotely negative; it can feel a little out of the way from the Lisbon city centre (in reality it is right in the neighborhood of Parlement and several embassies). But it is quite and there are plenty of transport options.
I highly recommend this posting and would love to stay there again.