The price is not the only variable in the investing world, there are the terms also, how much will your monthly payments  be if you buy a property for $700k at 4% or $500k at 7%?

They also declined a business loan due to seasonal rent variability and the new unit having unestablished revenue.

I know there are many variables and specifics involved but should I expect the dues to go back down to a lower level once the reserves are met.

The answer to your question depends on many variables, primarily the quality of property you're investing in and the quality of tenants you're able to attract with these properties.  

AirBnb is not HAUS and there are many more variables that determine a startups success besides "cost saving".

Are there any other strategies for maximizing my cash-on-cash return aside from going for commercial loans (with variable interest rates) or doing creative financing options (such as subject-2 or owner financing)?

it seems like their would be too many variables involved in a condotel to try any actually predict cashflow.....probably not a good idea as an investment in my opinion

It's not a big deal and you can work around it but it is something to be aware of.Typically 30 yr fixed rates better than HELOCs and if they aren't then there is real negative upside potential for interest rates because mose HELOCs rates are variable.

The two biggest variables are condition of the condo to begin with (ie. if it is old, it's more likely going to have more maintenance issues) and the quality of the tenant that's in place.

Owner occupant, investment, or commercial would influence the down payment, term, variable or fixed, and interest rate.