The place was close to the city center and to the metro. It is possible to do sightseeing by foot. The area is also nice and close to Avenida da Liberdade. The apartment was good and perfect for 2 people, despite I would not recommend for 3 people, because it is very small and if you need to use the sofa bed for the 3rd person you barely have space to move and organize your stuff. Unfortunately the shower support was broken, so showering was a little annoying as you had to hold the shower the whole time.
Our only serious problem was the stairs. First we though the flat was located on the first floor, but it is actually on the second, and the steps are very very narrow and slippery and the stairs are steep, it was dangerous to go down with heavy and big luggages (especially because my mom has knee problems).