We stayed at Andreia's place for 2 nights, to attend a friend's wedding The flat is just stunning, I would say even better than the pictures! Lot of space, a second large room (we didn't use), a balcony, air conditioning and any thing you may need during your stay. The flat is also adorably decorated, with a very nice "character" which felt typical from Lisbon and it was completely spotless (the cleanest I have ever seen). Also, great noise insulation at the windows. Although we didn't visit around much, the flat is conveniently located (15min of nice walk to Praca do Comercio) and other view point (Porta dos sol). By taxi you can easily move around quickly thanks to its central position.
Check-in and check-out processes have been very easy and the communication with Andreia always smooth, with clear and detailed instructions about the flat. I definitely recommend Andreia's place and would stay there again! Definitely my new home in Lisbon!