The rest "should be" (if bought properly), paid for by someone or something else. 

Take ownership of your mistake and learn to do the proper due diligence recommended above😊

If so, make sure agreement is in writing, signed by both parties, specifies new end date and ensures any existing security deposit will still be dealt with properly per landlord/tenant laws, and I'd also ask for a partial payment to be issued at signing to make obtaining his new place easier.  

They also do not have a proper screening process for tenants.

For newly constructed, purchased or renovated properties and also retroactive generally over the last 10 years, building components are properly classified into individual units of property and accurate recovery periods for computing depreciation deductions.

Without having the facts it sounds like there was not proper notice to the estate. 

Also if an LLC is not properly run it can be pierced as if yoy have no LLC.

If seller let roof warranty expire or not keep it up then typically try to get a credit from the seller at closing to cover future roof maintenance.Whether a roof needs lots of maintenance depends on if it was installed properly and how many trees are around it.

This could significantly increase competition.Technology RequirementKeeping vacancy costs low and high guest satisfaction high will depend upon the proper use of technology.

One of my current tenants in Denver lists the extra bedroom as an Airbnb arbitrage and I was totally okay with that, it's his residence and as long as rent is paid and he has the proper licensing/insurance then sure.