Serious injury or death has occurred from each of these items, and they could have been prevented by keeping watch and staying on top of things.

Think of these as savings for big-ticket items like new flooring, new appliances, or a roof or siding replacement.Because maintenance and capex can be “lumpy,” you may think that you’re generating more cash flow than you really are.

Apparently they should be brick pointing with lime mortar, but instead, they said the city will just plaster over the historical materials (original brick and lime mortar) with Portland cement because it's cheaper, faster and easier than working with more delicate, temperature sensitive lime mortar. 

It seems like there are a lot of nickle dime items that I'd go back to negotiate. 

Is there any feedback/ suggestions or items to improve the home for the next guest stay?

I will need to pay out of pocket for visible items like paint, the shower, toilet, vanity, kitchen cabinets, wardrobe, and so on.

Sure, you can make your unit extra special through design or amenities but when most of your competition is similar in size/shape, those extra items can only warrant so much of an increase in ADR. 

Any items billed to the tenant under my lease as "payable as rent".

You might only sometimes have the total budget for a high-tier item, but you can still bring value by offering other skins, in-game items, or trading expertise.

Due to item 1, adding an ADU can require years to start achieving any return (once the accumulated cash flow recovers the initial negative position).4) Adding an ADU is a slow process.