The duplex had carports and separate fenced backyard areas.

It sounds like a topic I need to dig into more—might even make a separate post for it!

Got to separate them. 

Turns out Cleveland is even better than Cincinnati the way they do it by separating classes of tax on residence, employment and business (rental).

Just to reiterate what everyone else has said, anyone 18+ needs to fill out a separate application and be screened. 

Hey @Marc Shin, so I am a fan of separate components usually, but in this case an all in one is the better choice.We have Ziply DSL at only 12mb as that is the max for our rural lake house and it has been no issues.

No complaints other than it does not propagate listings to Zillow, which means I usually create a separate Zillow Rental Manager account to make sure it’s listed there.

A cost segregation study is a strategic tax planning tool that separates the assets that have a shorter useful life and can be depreciated over 5, 7 and 15 years from the residential rental property or nonresidential real property that are depreciated over 27.5 and 39 years, respectively.

This keeps the liability within the LLC and maintains the separation between personal and business assets.

As for the original post, I think something like this works best if it is concrete: dates (say the last week of July and December), monetary consideration (I would suggest a separate sublet provision wherein you pay them for use, rather than working out rent credits), insurance and liability requirements, etc.