See the wall that comes out from the right - simply extend it across to the left and put a door in it.It would look normal, visually, and then everyone could use that storage closet under the stairs - perfect place to store winter clothes and stuff, X-mas decorations, etc.A non-load-bearing partition wall with a door in it to the downstairs "bedroom" should be pretty cheap. 

Jumped onto my trusty 3d software for a quick visual.

They can probably do a visual inspection immediately and indicate whether it is likely or unlikely, then they can conduct a physical test of mold in the air and on surfaces.

They have the visual in their mind of a place that needs work, and that is the image they tend to keep - that they are living in a unit that needs work, so they will find work for you to do, in my experience.  

You must clearly spell out or paint a visual picture of what will likely happen if the tenant ignores your memo.

In general, a physical or mental impairment includes hearing, mobility and visual impairments, chronic alcoholism, chronic mental illness, AIDS, AIDS Related Complex, and mental retardation that substantially limits one or more major life activities.

I enjoy large, longterm projects where I can visualize big picture scenarios and execute.

It is hard for almost all of us to look past the visual.

Prior to the walk-through, be sure to set expectations for you having the visual access you need. 

All that would be displayed is a redacted DL for visual confirmation and a contact form for the selected LL, no defamation, no indication of whether or not they were evicted or didn't pay, just a simple 'Request Contact Info by Email' form (would contact the specific LL by the provided email at registration).A site like this would have to be heavily moderated for LL registration and a LL adding him/herself to a particular tenant as a previous reference.