Would really recommend this apartment if you want something centrally located. The location is amazing and the views are great, considering you are in the centre of Lisbon.
As stated in a couple of other reviews, the apartment is on the 4th floor of a building with no lift/elevator, so lots of stairs to deal with. It is also busy outside at most times of day, so if you're looking for peace and quiet, just be aware. However, these are really minor issues, and if you can see past these, then you're on to a winner.
The apartment is as advertised, and would be great if you are traveling solo, like myself, or as a couple/pair.
Would definitely recommend this apartment to others, and would stay again if I ever get the opportunity to return.