The variables associated with beach STR's can be much more unpredictable. 

I've included an example below to help illustrate this.So different lenders have different rates (which do vary even for DSCR loans) but these are factors they all consider.See example below:DSCR < 1Principal + Interest = $1,700Taxes = $350, Insurance = $100, Association Dues = $50Total PITIA = $2200Rent = $2000DSCR = Rent/PITIA = 2000/2200 = 0.91Since the DSCR is 0.91, we know the expenses are greater than the income of the property.DSCR >1Principal + Interest = $1,500Taxes = $250, Insurance = $100, Association Dues = $25Total PITIA = $1875 Rent = $2300DSCR = Rent/PITIA = 2300/1875 = 1.23If a purchase, you also generally need reserves / savings to show you have 3-6 month payments of PITIA (principal / interest (mortgage payment), property taxes and insurance and HOA (if applicable).

Leverage magnifies return. 3) The effort involved in adding an ADU is comparable or larger than a rehab associated with a BRRRR.

They don't associate cheap with undesirable. 

They teach people what they want to know without out all the fluff and they have a pretty cool community of mentors and Renatus associates that help you along the way.

@Katharina Bormann in my experience they don't like those official looking letters in the mail so make sure you do that and also have a cost associated with unresolved issues like trash in your lease. 

If you actaully put the property under contract, the cost associated with that porpety can be taken as captial loss.Replacing countertop could also be repair.

Skip tracing companies are able to pull all of the numbers that are and/or have been associated with that person.

In general the economies of scale as associated with the larger properties just makes them easier to manage and causes them to cash flow better.

A great way to start is by attending RE events and joining a local investors association.