You may tell your tenants that any/all rent increases are reflective of the market rents for the area and your not just randomly increasing it. 

as simple as it sounds I live in a market where people are paying way over asking price yes Dallas and the city at that, I spent months looking and one days I went to my boss and he mentioned someone he knew selling a home at that i could obtain a better price than if I were just buying from any random person in this market.

It is quite an odd plot of land as there is a random driveway so I assume it used to serve as an extra parking lot or maybe a trailer home in the past. 

$318... such a random number. 

Sending random letters can get very expensive that is why we prefer cold calling and texting leads. 

Think scholarships (even if you don’t qualify for academic ones there’s thousands of random non academic ones if you do the research), community college then state institutions, etc.

I think it's easier by the apartment as the students know each other living in the same place and there won't be finger pointing should anything go wrong when  you rent out by the room to random students. 

It could be totally random in that you had some people who stayed there that don't give out 5 stars.

I recommend vacation rental markets where laws have already been established for vacay rentals / you don't have to worry about laws changing like you do in random small towns or metro markets. 

In other cases, there are random names that local people don’t identify with.