Everyone's interpretation of clean is different but sanding and refinishing will remove that dirt/stains, level the surface, and seal it making it 2x easier to clean.

If you have some smaller decorative stained glass windows leave them and just ad storms.

I see owners who rarely if ever set foot in the property and then wonder why they sit on the market longer than others....because they are dirty, lawn not mowed, yard full of weeds, broken down fence, missing screens, stained toilet seats, and on and on. 

Here's an odd one for you guys I found the property here in Florida after repair value of $135,000 I can buy the property for $75,000 it's a relatively good condition might need about $5000 in repairs and clean up here's the catch the cleaning up would involve blood stains on the curtains and bullet holes in the walls from a homicide back in 2011.

Common things I have seen over the years: severely stained carpet, doors broken off hinges, holes in the walls, missing refrigerator shelves, broken blinds, etc.Sincerely,Melissa

This matters, it set's definition for completion, for example "paint all walls to move-in ready condition free of any stains dent's or flashing" for a property with stains, dents and flashing from old paint touch-ups.

And send him some pics of clawed up doors and pet stained hardwood floors. 

Tenant can easily wipe stains without damaging wood or the finish. 

A simple light bleaching of the asphalt shingles will take the stain out of the roof (before the painting obviously).

Kitchen remodel (granite, new backsplash, painted cabinets), new LVP and paint throughout, new fixtures, lighting and vanity, stained the deck.