I agree with @Jonathan Greene that the question is vague, so my advice will have to be as well.The short answer: MTRs are real estate, so just like all real estate, any place that can long-term-rent cash flow with increasing jobs/population can be a suitable site to purchase. 

All a mid-term rental is someone staying not permanently but longer than on vacation.

Quote from @Nick Cooper: I’m looking to purchase my second long term rental and I’m wanting to know if 20% down would be possible with an investment property as I’ve been told 25% is minimum. 

How do you connect with the right contacts or organizations to offer your property for mid-term rentals?

Long term goals in mind that I need a track record and capital for! 

I am a long term hold investor so that would likely be my play.Good luck Sean!

@Muhammad Kashif Flipping a property in 6–9 months results in short-term capital gains, taxed as ordinary income (up to 37% federally, plus NJ state taxes up to 10.75%).

If you’re leading it to a company be sure to have in your lease explicit information about who is responsible for what in terms of maintenance.

I am interested in buying a long-term turnkey property in a nice area (I live in San Diego so this property would have to be out of state).

If the market is tough, I reduce the rent rate over the full 12-month term.