I don't know your specific market all that well but have you done some analysis on your ADR during the high season X your high season occupancy rate and determined whether taking lower priced slow season bookings vs letting your property stay vacant during the winter averages out in your favor?

The risk for investors became low enough for them to be really interested in the project.

In my state i have no such requirement on security deposits but i question the feasibility of doing this as well as how will anyone know as long as you have the means to pay the tenant their deposit when they move out. most banks charge for low balance accounts.  

But I'm guessing maybe your credit is too low for that?  

I made a low offer and it was accepted.

my market is near the nation low in both evictions and delinquent rent even with very tenant friendly laws.  

I would search for a property that has a low interest rate Fha or VA loan.

I have purchased the following books:ABCs of Buying Rental Property The ABCs of Property Management The ABCs of Real Estate Investing The Advanced Guide to Real Estate InvestingThe Book on Investing in Real Estate with No (and Low) Money DownWhat order do you recommend reading them in?

That said, if you only have a few "residential" rental buildings, most direct carriers can get you pretty low deductibles on their stand-alone policies (State Farm, Allstate, Farmers, Nationwide, etc.). 

I don't like it I have to be honest - I think part of the reason you're cashflowing is the low interest rate and relatively high downpayment.