I like this idea because it reduces the potential vacancy I could have by doing a short 3- to 4-month lease that ends in April or May, then starting over with a year lease.

What are you looking to achieve in the short, mid, long term?

And I also see many questions popping up about running a short term rental business, which to me is more of a business than an investment although it does involve an investment in real estate. 

They also have a home vacancy tax in a lot of areas which applies to short term rentals. 

The bank set me in at 7.1% interest (construction loan short term) This will be a side hustle for me.

Overcoming Common Financing HurdlesMortgage brokers excel at tackling challenges that often derail new investors:Low Down Payments: Brokers can find lenders offering low or no-down-payment loans, ideal for new investors with limited capital.Complex Income Streams: If you’re self-employed or have variable income, brokers can identify lenders that accept alternative documentation.Competitive Rates: Brokers have the leverage to negotiate better rates and fees, saving you thousands over the life of your loan.Pro Tip: Communicate your investment goals clearly with your broker so they can tailor their search to your needs, whether it’s a short-term fix-and-flip loan or a long-term rental property mortgage.3.

Scope of WorkThe Subcontractor agrees to perform the following work (“Scope of Work”):Detailed description of tasks and responsibilities.Exclusions: [List any exclusions here].Materials to be provided by: [Contractor/Subcontractor].Reference drawings or plans: [Attach if applicable].2.

I am thinking of starting with rentals, be it short term, midterm or longterm. 

The one that's short term and don't cost me a lot to initiate/originate.

investors can figure on 10 to 12% return on PMLs   generally they are short term 6 months to 18 months.. in my 40 plus years at PML I find most investors started as landlords then tire of it and start to diversify.