I deal with a roofing company they do a lot of storm damage ( insurance claim ) work . 

Love to hear your thoughts- AC unit needs to have an exterior side panels and brackets to support to secure the unit- Do not screw into the window sash as this will damage the window and you will be responsible- Install weather striping to avoid water or critters from entering your unit- Unit needs to be tipped towards the outside to avoid condensation and damage to floors- Landlord is not responsible for their Air conditioning unit if broken- Tenant is responsible for window, floor, ceiling damages caused by poorly installed window unit- Window unit should not be installed before May 1st and must be removed by Oct 1st

She is requesting the carpet stretching not be done until her tenancy ends, which normally I'd be fine with, but I've been told waiting too long to address it could damage the carpet long term (this is a higher end rental).

Once a foreclosure is commenced the borrower's credit is severely damaged.

I usually tell my investor clients that if the building itself will be in a flood zone (not just parts of the lot), it's not worth the investment unless it's a steal and you're able to pay off any mortgage easily if flood rates rise ridiculously (and you can afford to pay for any flood damage, yourself). 

Not understanding the amount of damage to a property an occupant can cause when his interest is being foreclosed on. 

If the tenants do, charge them to repair the damage and repaint the wall. 

Try to use fixtures that are out of the way and less likely to be damaged. 

If not I'd get some.How did you get in to find out of the damage?

If everything else looks really good and they seem like good renters all around besides the smoking, you could add an addendum into the lease stating that they must smoke outside of the property and that they would be responsible for any damage (discoloration, smells) left over as a result of the smoking.