Apartment rooms without windows

[Matthew Pritchett]

I am looking at a 2 story apartment building in Indiana with shared walls - so some of the “bedrooms” don’t have windows and one unit is devoid of windows. First, is it legal to have bedrooms without windows to the outside and to have a unit without windows? Egress is to a hallway and not directly outside. Second, how can I market this to lease the units and then for the sale at exit - can I market these as bedrooms? Should I call them dens or multi purpose rooms? There is also a basement - recommended use is storage. Does anyone have experience using a basement as storage space rental for tenants and non-tenants? There is also a retail/office space on the first level - no issues with that.