I lived in an ancient finance building that was converted to residential in the 80s. All the layouts were bizarre, twisting around to give every unit the barest

I lived in an ancient finance building that was converted to residential in the 80s. All the layouts were bizarre, twisting around to give every unit the barest slice of window. The bike storage in the basement was a vault with a 24" thick door that was just left there because it would have been impossible to move. Converting a modern building would be very expensive. Converting a hotel on the other hand -- perfect. They already have plumbing and fire separation. An open plan office is just a shell.