Opposite to the house of the Govantes y Herdara family, we find the house of Los Rosso and its watchtower: hidden behind the tower of the entrance, there is a patio with uncommon dimensions in Osuna due to its rectangular floor. There is also a fountain in the geometric centre and two superimposed galleries.
Outside, there are two columns on pedestals framing the lintelled door. Over it, there is a curvilinear balcony and, above, there is a stone relief to decorate the coat of arms of the noble family. Finally, there is another balcony over the banner of the founders with a mullion and a column in the shaft forming two semicircular arcs.