All in all we loved staying at this apartment while we were in Lisbon!
The location of the apartment was absolutely fantastic, it was easily reachable from the Airport and it was right in the center of the city so we were able to walk pretty much everywhere. When we did have to take the metro/tram/bus we had enough stations nearby as well.
It has to be said though that the apartment is not only on the third floor without a lift and a small hallway, but also in the middle of a very steep hill which you should keep in mind traveling with a lot of luggage / small children etc.
The apartment itself looks just like it does in the pictures, it is very stylish. It was also very clean all throughout!
Sadly the equipment of the kitchen was rather sparsely, it barely was enough for four people let one six. In general I would recommend the apartment to a max of 4 people, as it is just not big enough and doesn't really have the amenities for 6 people in my opinion.
The bathrooms were also very clean and nice - In one bathroom you could not hang up the shower head though and the shower door in the other bathroom didn't properly close, so water kept flowing out. The tap in the sink in the back bathroom is also very loose - but overall it didn't impact our stay too much, but it would be nice if it would be fixed!
Another thing to add is the noise which comes with the central area - at night you had to keep the windows open as there is no a/c but that meant that you heard all the noise from the streets below. As there are lots of restaurants and bars around you had a lot of people partying and shouting and singing so there was quite a lot of noise at night. This is not the apartments fault but rather the location and the way the buildings in the street are laid out, but this should be considered when booking.
So in general I would recommend this apartment as it is very stylish, clean and central - but you should be aware of the above things when booking!