If neither of you have ever done a flip or a lipstick flip (this does not sound like a clean it out, repaint property at all), the costs will be 2-3x as much as you think and it will take 2-3x as long.

Using eggshell for sheen on trim guarantees you'll be repainting trim all the time.

Yeah, it's an interesting model--I can see how it could work really well in some scenarios and not work at all in others. ...for one thing, you have to use furnishings that in-line with the look and grade of the property, and which are appealing to the typical tenant--which I'm sure can be a bit hit and miss...   ...I suppose that one hidden benefit with a furnished unit is that you don't have so much wear and tear from tenants moving furniture in and out, hanging pictures on the walls, etc....I just finished a rehab at a LTR property--the tenants were pretty good and didn't cause any excessive wear/damage, but even then, there's always a lot of patching and re-painting that needs to be done after long term tenants leave....

I rented an apartment and the property management company added 6 k in move out charges to repaint the entire interior of the home due to minor marks (didnt give back 4 k security deposit and charged 2 k on top).

Updated the kitchen, repainted the house, and replaced the roof, as well as cleaning up the landscaping.What was the outcome?

The house I bought had a strong pet odor, cat urine, and as part of the scope of work, I asked contractor to eliminate that odor, however house was repainted and work 99% complete, but odor came back.

They want the interior main floor repainted.  

This includes, repainting and patching some holes. 

Estimate is excess 1.5K for claiming half the walls and ceiling in the home need to be repainted, every door in the house needs to be cleaned, and other random items.

A drywall patch, mud and repaint will cost your, say, $300 regardless (I know the size of the hole matters, but your rent doesn't).