So after a booking, I automatically send them an email to customize their stay with an advertised amount (e.g., $150 coupon) then charge if they want more.

Your best bet for information is other owners or customer service.

And I couldn't care less by the rules you, as a broker, must abide by when you provide your RE Brokerage service to your retail customers.

All the million dollar custom homes in my area have smooth walls.

I am a contractor , I have trusted subs already , but they just dont show up when you need them , they are on other jobs , there may be a week or so , nothing gets done , and this may happen 4 or 5 times during the project . 

You'll also want to have plenty of your own capital in reserve to deal with vacancies and repairs.I imagine a lot of the tenant-landlord problems can be prevented by providing good customer service and having clear standards, both in who you rent to and how you maintain your property. 

sub 2 wraps were big.