Along with lack of inventory .. and then of course risk reward. 

@Alex Penalva everything can basically be boiled down to risk and reward.  

Make sure that the rewards will justify the risk

It's incredibly rare that students have or will bring their own IMO.My experience with common areas, renting by the room, etc is that is it a lot more work for not a lot of reward.

@Lukas CrosslandWe've helped many investors just like yourself build a successful rental portfolio across numerous cash flow markets.

@Gina NicolasI have been involved in this numerous times as the wholesaler.

I had read numerous books, read many forums and articles online, and watched countless videos.

There were a few things that stuck out and spoke to me in your blog, one of which being how you asked yourself is this why I came to the United States and what the "reward" for all that you had been through up to that point working in the corporate world.

They do have a few friends who focused on real estate and picked up numerous homes.

I agree with @Greg M. that providing quality housing at a market rate is basically incentive enough, and that on-time payment should not be rewarded since that's the baseline.