This caused the landlord to unwittingly put his another tenant's health at risk.

It's a health hazard to them and to your other tenants.- Mold will grow in the areas that are buried. 

The weed was found in the access door to the bath tub plumbing..

My recommendation is to keep the w2 income as long as you can, you can get better financing and health care. 

Her mental health had deteriorated.

Overall, I'd like to get better at analyzing the health of an investment.

I quit my job last year and finishing getting organized with the vacation rental side of my business and by November will be ready to tackle this new phase in my real estate career full steam ahead and grow my business.This is my current situation, 4 rentals, plus my own home:Home 1 - Vacation Rental - worth about $160K - Owe 42K (conventional 4.25)Home 2 - Vacation Rental - worth about $185K - Owe  $50K (conventional 4.25)Home 3 - Long Term Rental - worth about $165K - House free and clearHome 4 - Long Term Rental - worth about $95K - House paid off but have lien from SBA Owe $30KHome 5 - Primary Home - worth about $200K - Owe $120K  (FHA, 3.75 BUT also pay PMI so in reality it's 4. something)All my houses are doing really well, I tried to get rid of the cheapest one to finance buying a more high-end home but no bites so just kept it as a rental which is fine by me.My goal is to acquire more properties in my area (suburbs north of Detroit or something close to downtown Detroit) or in South Florida (used to live there and have family there), my options would be:- Property to flip (have a friend contractor that has done work for flippers so I would partner with him)- Long term rental- Vacation rentalMy first hurdle would be financing, I was trying to hold on to my high stress job until I acquired at least 1-2 more properties but it was my health or 1-2 more properties so I chose my health.

Who else will I need to complete this "Kitchen remodel", Tub replacement, Flooring installation?  

While filling out the move-in condition sheet, she noticed some minor issues- signs of water under the kitchen sink and by the laundry tub, roof sealing not complete, garage light burnt out, and signs of a mouse (I have not seen anything that would lead me to believe a mouse has lived there).

Nothing in health or safety code says you have to have a fence so I would just rip the whole thing down and tell her to figure it out and get an electronic collar.