(internal medicine) at a hospital in Grand Rapids, MI.

If you want to only accept ACH transfers (bill pay) to your account as the only way to pay rent, simply write that in the lease.

Investors here can invest in Mortgage Investment Corporations that on average pay out 7-8% net on your investment without any head aches.

They do charge $3 per transaction or $10/month for up to 10 ACH transactions going to the same account. 

@Carlos Cevallos,I'm going to say something you might not expect:If you're going to continue into medical school, you may need to choose between vocations: medicine or the real estate business.I personally hold that compassion and profit motive are diametric opposites.If you would be a dedicated medical person, you may find real estate rather a serious distraction.

Today the property manager said the landlord wants to raise the rent $50 to offset the cost of the furnace and AC. He

I think getting this head ache of a tenant out is best.

They called one day to ask if I could come out and help them figure out why they kept getting mold in their medicine cabinet.  

It gives me piece of mind- it lets me know a couple days before the rent is due when each tenant is lined up to distribute via ACH.

I imagine it took a ton of work and heart ache at times but clearly you persevered and took the ugliest house on the block and made it the most beautiful!