It doesn't seem to be designed for landlords.There are many products that detect dampness and alert you.  

They aren't financially responsible if things don't get fixed etc.In my area many out of state landlords designate a local partner, handyman, etc as being their "agent" for purposes of this requirement.If there is a serious issue with the property, I guess there can be no excuse for the agent not to come to the property quickly to at least evaluate and start to address it unlike someone out of state.

My agent would say all adults over the age of 18...regardless of marital status.

Houses are designed/built as rental hardened so minimal repair/maintencance for at least 15 years.

https://www.wixcreate.com/post/wix-website-design-for-vacati...

Depending on your market (and I know nothing about your area) you may consider facebook groups for students or marketing anywhere students/young adults can find you. 

There is a product offered by All Western Mortgage that is designed intentionally as you're describing. 

Three of the last 5 years, though, they slipped to a Tier 1 designation.

Look at the entrance aprons which is the commercial name for where the cars pull into the parking lot they are special cement design. 

Brand new construction with traditional boveda ceilings, professionally designed and decorated, 100% turnkey for second home or Airbnb. 25 minute walk to the historic center and in gated community. $200,000 USD