We stayed four nights in Manuela's apartment in Lisboa. Everything was fine and she gave us good recommendations.
Unfortunately, the neighbor on the floor upstairs was super loud and walls/ceilings in Portugal are very thin. He was drilling, hammering and sawing until 2 o'clock in the morning only to finish his day by snoring all night sounding like a Finnish Black Metal singer.
Apart from the neighbor, we enjoyed our pleasant stay in the apartment and base to discover the city.