If they fail to comply, you may need to involve legal counsel or contact your state’s real estate commission.Hire a Reliable Manager: Finding a professional, responsive property manager is key.

There is a lot of training involved, it takes months (up to 2 years), and they usually like to start them off as puppies.

Negotiation tip #47, make it as simple as possible for the other party to accept your terms.

Lots of people rent houses for parties as well, and you won’t be able to do anything about it.  

Screening and Gaurantors are important, you might want to look at majors for some more serious ones that don't have time to party. 

Third-party referrals work since few people do any due diligence. 

You will want to consult with a lawyer.In regards to your last two questions here's some background on what makes a contract valid and enforceable:Offer: A promise to do or not do something within a certain time period Acceptance: A clear and direct statement that all terms and responsibilities are accepted Consideration: A legal and adequate inducement given in exchange for the promise Capacity: The parties to the contract must have the legal capacity and competency to contract Awareness: A party must be aware of the contract Legality: The contract must be legal in the jurisdiction it will be operating in***Not legal advice*** Steps I would take: -Review contract in detail to understand each counterparties responsibilities (if you are not aware)- Email a copy of the lease to each of the tenants listed on the lease and reiterate lease expectations for termination notice, rent payment etc. - If the lease was signed via Docusign (other esign may have same ability) - you can go to the envelope, go to history and view the IP addresses for each action taken.

When you mentioned selling and other investors being involved.

I do have several S8 rentals, while they are generally performing well, there is more paperwork involved in the leasing and the strict inspections can be quite a pain. 

Mike has been easy to work with for me, I don't know the other guy who it looks like was involved in Four Peaks.