Don't try to fight its basic nature... it was intended to be insudtrial space, so you should just clean it top to bottom (pressure-washing works well for that). Then focus on comfort systems for human habitation - heating/ventilation, electrical and plumbing. Insulation and sealing against draft is crucial, to control heating cost. Then use furnishings to set up separate areas. from Brian, Architect, Vail, Colorado USA.