This apartment has everything you need for a nice and decent stay in a very nice area of Lisbon. I´ve been visiting for a working holiday and working from the apartment was easy (online business). Just note, that there´s hardly sun in the apartment. If you want to get some sun, you have to go outside. This can be very pleasant in summer when the temperatures get up high. Communication with Alexandre or Barbara was also very nice and easy.
The location is great! There are many restaurants, cafés, supermarkets and stores around. It´s also located in a walking distance to the City Centre or Bairro Alto – very lively but also kind of quiet because it´s located in a small street. I can definitely recommend staying in the apartment :)