Best Way to Rent Out Master Bedroom

[Nick Boring]

I am closing on a house in a couple of weeks, it is owner-occupied and I want to rent out the master bedroom. I posted the master on Facebook and Craigslist in my area and got a lot of responses. Now that I have some interested people I want to find out the best and most professional way to handle the application, background check, and leasing process. Cozy came highly recommended by a close friend and it looks like they would be perfect for this, but they are not accepting new accounts because they are merging with apartments.com. Apartments.com will not let me list a single bedroom within a house on their website. I am stubborn and called a couple of times but both times they said I cannot list a single room. 

I am hoping to find a website that will handle:

• automated monthly payments
• background checks
• leases and applications

Any help will be much appreciated, I am really hoping to get the room secured with a tenant before I move in so that I can start my house hack! 

Thank you,

Nick Boring