Here's an honest review of this property.
Pros: it's even more spacious and stylish than the photos suggest, it was an easy place to relax and feel at home. It's located in the Lapa/Estrela neighborhood of Lisbon, which is a residential area home to most embassies. It's a great place to live like a well-off local and have a non-touristy experience. Many quality restaurants and bars are within a 5-minute walk. There is a supermarket (Pingo Doce) 5 minutes away, and getting to transportation is about a 10-minute walk to either a tram or bus. Walking to the major attractions, Baixa/Chiado, Alfama, LX Factory, Barrio Alto are at least a 25-minute walk. Check-in was a dream and communication with Maria Rosario was fantastic. The entrance has a code and the front door has a code-box that unlocks the front door key; so you don't need to carry keys around or worry about losing them.
Cons: the walls are quite thin. You can hear people walking up and down the stairs (there are approx. 25 and fairly steep) and the dog in the unit above can be heard barking and walking around. I think this is fairly common in Lisbon, but the bathroom had an awful sewage smell throughout our 5-night stay.