How nice should a rental's basement be?

[Alec Jacobs]

I am wrapping up a lot of the rehab of my first rental property and I was wondering how a basement of a rental should look like?

It has a typical unfinished basement with a concrete floor and there shouldn't be any reason to go down there except to do your laundry. 

I know this is a nuanced topic and it is probably market dependent but I can't find any pictures of rentals' basements on listing sites.

Any insight is welcome. Thank you!