Fixing an old apartment building in Old Barcelona

The building in the pictures is in bad condition. It has to be revamped structurally and the apartments have to be remodeled, with all-new bathrooms and kitchens, to allow for renting. However, the investment has to be low to moderate since the building will be expropiated by the city sometime in the future.
Main entrance of the building, at the end of the street. Back façade of the building, facing a plaza. There used to be another building that has been torn down.
View of Sta Maria del Mar from a terrace on the 3rd floor. Stairwell of the building. The space is a little tight.