If you have an apartment that hasn't turned over for 20+ years, you can either rerent it at a low text and get sued by your tenant for lead or habitability violations, or you can borrow money and invest it at less than 2% in a renovation. Both ways you lose a fortune.
Or you leave it vacant and still lose money, but you don't have to work as hard doing it
Or you leave it vacant and still lose money, but you don't have to work as hard doing it