The apartment was a great home base for my partner & I to visit Lisbon for the week, but it may not be the right fit for everyone. On the plus side, the apartment is quite spacious and is within close walking distance to many great attractions & restaurants. The balcony is also gorgeous, with a view of the bay.
The neighborhood has lots of nightlife (including a bar/club on the ground floor of the apartment building) and could be pretty loud; we closed the windows at night to sleep. Similarly, it's a fifth floor walk-up so be ready to climb stairs. Again, it worked very well for us but may be less ideal for families with other needs (e.g., a family with young children).