The experience is better than we expected.
The apartment is located in a central area. Walkable to everything including the Rossio train station.
The apartment was clean, with a great view, and had a elevator (which helped a lot to get up to the 6th floor.)
The communication is easy. It is hosted by a management company so there is always someone online via WhatsApp. They also provided based seasonings, such as salt, oil, and sugar, if you are going to cook a meal. One thing is that the hot water could only last so long before you need to wait for the hot water to get hot again.
It was conformable for us two.