Apart from many holes in the walls, the tenant had put screws into all the window frames some of which went all the way through to the outside. 

Find out if there is a wall with convenient access to plumbing drains. and if that area could work as a kitchen.

You may have to give up a big % of the GP on your first deal just to be a fly on the wall while building a track record. 

Really don't want pet-pissed walls at my houses. 

I think the best you can do is add a few accent walls in the bedrooms and make it less neutral. we paint everything white in our new builds and very neutral as well as do higher end simple painted accent walls and trim walls to help make the house a little different. if you really want to sell I'd get a interior designer / stager and spend 5k with a way more experience agent who sells new builds. we are licensed if you can't find someone. the way I market is very different. 

I feel like I need this printed as a creed on my office wall. 

So, agree with @Nathan Gesner about letting the tenant prove there is unhealthy mold issue.Will point out though, that there is probably mold behind the shower tile walls.

Painting the walls to remove dust, dirt and nicotine marks.

Lease violationsTell the boyfriend you might have to patch some holes in walls and doors or clean up from a homicide Call police during the activities for a welfare check Ask her what’s up ?

Sometimes, I see people add bedrooms when it doesn't make sense.It's often not as simple as just putting up a wall because you need lights, outlets, and proper ventilation.