Others  mentioned the honeymoon stage, IMO that only happens with new tenants when it's a nice newly renovated house, inherited tenants start out frustrated and annoyed.. as the one we just bought is frustrated, she's lived there 6 years, prior landlord never improved her house, but fixed the other units to rent them out,...   

-Pressure wash outside building, some paint-Remove all the excess stuff sitting outside-Kill all weeds and fill cracks-Pressure wash parking, add Lines for parking-Some mulch and nice plantsIn that order...

I want to make sure that everything goes smoothly and in order to do that I want to super knowledgeable and informed about the beginning stages.

Pest control- we put mouse bait out along the fence lines and under the units, mow excess weeds and grass.

I'm still in early stages of researching this, but it looks promising and there is case law to support this technique.

@Kevin Nolan -  Well,... let's see...Cheapest -Mud/Paint-Fixtures-Outlets/covers/switches-Vanities-Appliances-Staging (Seriously.

Now I'm in the due-diligence stage and wondering about insurance. 

Seems that a MIL suite would attract buyers looking for a space that they could either AirBnB/VRBO, house-hack (off the books, roommate-style), or put a genuine in-law into, depending on what stage of life your buyers are in.

However, unless there are significant differences between the subject property and in comparables differences in things like style shouldn't matter excessively in most areas. i would consider filing a complaint with the lender and ask for a review citing the significant irregularities.  

There are two schools of thought on staging.