We enjoyed our 3 day stay in the heart of Lisbon - the apartment is conveniently located, close to Baixa and Alfama. The apartment was great - the only thing it was too hot during our stay, and there was only one fan, but that can be easily improved. One other thing was the communication - it was a bit difficult to get a sense when we can check in, but in the end we worked it out.
All in all, this is a nice place to stay if you want to experience an authentic stay in the midst of an amazing city.