Inexpensive beach house on strip???

[Ohio_Buckeye_1]

I agree Green Leaf Cabins are going to be about the best rate you will find for a 3BR house on beach road. http://www.greenleafcabins.com/rates-info.html
When you split the $180/night between 4-6 people, I'd consider that very affordable. Also, they hint they have a reduced off-season rate, so you might even do better.
Granted, it is morass side, but right across the street is Sunbeach Bar with everything you would need.

Hidden Paradise has 2 and 3 bedroom suites, also at reasonable rates. http://www.hidden-paradise.com/rates.html
Again, they are on morass side of road, but you have beach chair access at their related restaurant right across the street, Mama Flo's.

One thing to note when comparing prices - some hotels note their price includes all taxes/fees, some don't.
This can be anywhere from 15-20% and a surprise if you are not expecting it.
I point this out because I saw that HP says their rate includes them, while GLC is silent so may or may not.