I have had mostly great guests, but the few that I've had that were terribly messy (much of what you describe but also smearing pizza toppings on the floor, having an easter egg hunt (I found some of the eggs) with chocolate in fabric and pink maybe egg coloring staining two sets of sheets) and yet were given 5 star reviews from prior hosts.  

Vibrant colors, wallpaper, etc.

I made an Excel spreadsheet and color code the ones that are higher in the red or orange colors, and low balances in green.

@Scott Mac That sage color is gorgeous!

having an incredible onsite manager, adding colorful flowers to perk up the curb appeal, paint the windo shutters to make them pop and renovate the interiors.

The Honeywell 9000 color touchscreen thermostats are very user friendly and have 2 different levels of locking the controls.I recommend these over any other thermostat. 

We decided to just give her the initials of all 6 followed by the surname that was apparently common to all.She then complained that there were letters missing from her surname on the mailbox so I asked our maintenance guy of 22 years why & he simply replied he ran out of the letter 'c' as she has 4 in her surname & the initials took up several more.Then she reported us to the USPS because she wanted a 'regulation' mailbox so we complied but then she didn't like the color!!!.

I just think the coloring is nicer, same exact layout and materials.

However, there is a commercial duct running behind my bedroom wall that I strongly suspect is being used in violation of the building code.

STR in those areas do well year round because of fall colors and ski resorts and snow mobiling if they are on a lake, but on the flip side you are paying significant more because they serve dual purpose.