There is nothing that ruins a business relationship quicker than poor communication and unexpected fees.Some PMs add a flat fee or a percentage on top of maintenance bills.

I personally have nothing but nightmare and horror stories, not necessarily problems with the tenants, just problems with the procedures and the paperwork, poor communication from the HUD caseworker etc... 

Also, owners/tenants/and vendors enjoy using it as a form of communication and information gathering.

Speak to them about their experiences and satisfaction with the firm.Look for testimonials or case studies that demonstrate successful investments and positive investor experiences.Evaluate Transparency and Communication:Assess how transparent the firm is about their operations, fees, and processes.Ensure they provide clear and regular communication about your investments, including updates on loan performance and any issues that arise.Analyze Risk Management Practices:Understand how the firm manages risk.

Let the tenants know going forward all communication should go through your attorney.The other option is to get a property manager involved as well, but at this point i would go right to an attorney.

There are many syndicators that had built a reputation for having executed business plans, very communicative, and accountable.  

Our checkout time is 10am and we communicate this to them in the House Rules, check-in message, day before checkout message, rental agreement, and on a list of rules on the back of the front door.At 10:15am we send them an message asking if they have checked out because our cleaner contacted us and is waiting to get inside.  

@Michael SmythiesThe biggest lesson is the wild and ever changing landlord tenant laws.To your area of interest:- Tenant relations: Keep it business, stick to the lease agreement, communicate, and the golden rule.

Communication - Text, email and phone.

Communication with the loan officer is not the greatest.