They can ensure you and the Seller meet your contractual obligations.

I would recommend finding someone with expertise in evictions as to ensure a quick and smooth process. 

It ensures they are treated fairly and that their disability is accommodated for but they are still subject to rent increases, lease violations, and even eviction.Treat them like a regular person (honestly, fairly, and according to the law) and you'll be fine.

@Nick Gee, Your entity structure is more about liability mitigation and operational tax efficiency. 

I have another property for rent right now where the comps have it listed around $5k/mo but it doesn't have a full kitchen (more like an efficiency kitchen).

Ensure you protect this information if the tenant gives it to you and ensure they don't email this application with the SSN or email the SSN to you.

We had our attorney and CPA get together to ensure everyone was covered from a liability and tax perspective. 

I will be fixing up a two-bedroom apartment and an efficiency apartment on an adjacent parcel to my single family house and renting them out.

Had to get rid of some contractors early on in the process, and ultimately should have focused on speed & efficiency over trying to hit my budget.

The tenant with the thermostat must be told - in writing - that the temperature should stay within a certain range to ensure the second tenant gets the appropriate amount of heat.You can also look into installing a "smart thermostat" like Ecobee and setting limits to the hit so tenants can't put it above/below certain threshholds.