Claudia and Lucas' apartment is newly rehabbed, cleverly designed, and above all centrally located yet away from the tourist crowd. It sits at the foot of the Cathedral, and short walk to the Ribeira. Our favorite was meeting one of the elderly neighbor who spoke no English but insisted on helping us contact Claudia as we must have looked 'lost'.
This is one of the best Airbnb places we've stayed in if not the best. Can't recommend Claudia's place enough.