Our stay at Frederico's place was really great. The apartment is located in a very nice part of the city within rather easy walking distance to most of the interesting places on that side of the city.
Transportation was great, located right across the street from the metro station.
The apart was very clean and cozy with all the amenities you would expect, including a nice new iron. The windows are modern and block most of the street noise when closed. The streets were actually rather quiet during our stay.
Only small con, the apartment is located on the 6th floor and no elevator, so it is quite a climb with heavy suitcases. However the view from the balconies is really great, so worth the climb!
Definitely recommend.