For the next billing cycle they increased my charges by $500 and did not notify me of the upcoming charge.

And during inflationary times rental rates increase.

The purpose of marketing is to attract an in-person showing.

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. 

I'll focus on maintaining the property and optimizing rent increases to ensure consistent returns over the years.

While borrowing for a down payment is risky, increasing your savings will lower your interest rate.

Debt is attractive to most people because they don't have the funds to do a project and instead of saving for years this is faster and easier but things go wrong and if you don't have reserves you can quickly find yourself in trouble.

@Gash Nookala,Renting can indeed be slower in winter, but here are some tips to boost interest:Enhance Listing: Ensure your listing has detailed descriptions and high-quality photos—consider professional photography if needed.Competitive Pricing: Double-check local comps; even a slight price adjustment or incentives (like a reduced deposit) could attract more interest.Broaden Marketing: Beyond Zillow, Hemlane, and MLS, use social media, community boards, and local business connections to reach a wider audience.Flexible Lease Terms: Offering shorter or month-to-month leases might appeal to tenants during this slower season.Local Property Manager: A local pro can tap into their network and help fill the vacancy faster.These steps should help you find a tenant despite the seasonal slowdown.

The higher credit is attractive, but what if the couple's income is 3.2x the monthly rent and the single woman makes 6x the rent?

However, if you're a W2 high income earner or business owner, I can't imagine it makes any sense to flip houses, mail mass post cards, wholesale, or build lead gen websites with the value of your time being better spent other places (such as learning about real estate and increasing your income through proven means), such as at your 9-5pm or growing your business, and your real estate is a long term process and you don't need "home run" deals to qualify or make it work.