We really liked the apartment. In our opinion it's better than expected from the pictures and description.
Firstly, this is prime location. 3 mins walk from the apartment, you have all the transport lines (metro, bus, tram) branching out in all the directions of the city, so it's very easy to get anywhere if you're planning on really exploring the city.
Secondly, there is plenty of amazing restaurants within 5-10 min walk.
Thirdly, some of the landmarks are at the walking distance (if you're physically fit).
The kitchen is so well equipped, and Pingo Doce is 10 min walk from the place of you fancy cooking.
The bathroom is very large and you can take a bath with a very nice view over a church.
The tiny balcony is so authentic. The area seems quiet at night but offers a lovely experience sitting out on the balcony with a coffee and just chilling.
We recommend it for a cosy stay in Lisbon.