I really appreciate what everyone has commented on this topic, maybe it isn't as crazy after all as for the vacay rental... i would remember to factor in cleaning fees (which could be passed on to the renters) as well as any extra tax for the lake resort.  

Of course the tenant denied the extra people....she even said that one of the extra beds was for her to fold laundry on ;)So the easiest eviction is non payment of rent, or anything else in your lease that is described as "additional rent".

A little extra holding cost, a cut in sale price to get it moving and expected profit can evaporate pretty fast.

Brighter than usual lights could mean extra voltage.

I have sometimes  rented places with an extra charge for the garage (in the case where I wouldn't otherwise mind keeping it for my own use).  

So for the extra $500 it buy and plant new bushes and flowers, I think it's money well spent.

They accepted our offer because we let them stay an extra month.  

You have to look at it long term, eventually that loan will be paid off and the amount you recieve extra per door will be a good indicator how much you recieve when the asset is paid for.

It was extra work and headache, but well worth it!

There are extra charges and work involved then...which could lead to it not happening on the part of the PM.