That is a tough situation. There is a condo building on Plymouth that has a loft looking exterior as if it was an old warehouse or factory. But on the inside it's just like any other condo building. The Shoe Factory building is exactly what your looking for but I do believe that they don't allow rentals. That being said, the next closest would be the townhouses that are in downtown or by the Casino. All newer and very modern in style many of them have roof deck access. Other than that there's not much else in Elgin. I would be more than happy to suggest other areas near by.
Check out MLS #: 07747367 or 07854625 to see what they look like.