Seeking a retreat rental for about 10 people

My women's group of 10 has been told that the lovely private place where we have held our annual retreat for 25 years is closing.  Starting next year we need a new place.  Does anyone know of a small private campground where we could rent and be the only ones there?  The lovely place we have grown so attached to was ideal because it had yurts, a hot tub, a wonderful kitchen.  Most importantly, it had a few proper beds and affordable price which are now needed given some of our members are now seniors and their bodies and budgets need this.  I know this is a total unicorn I'm looking for but I figured if anyone out there knows of such a place they will be on BPN.  Many thanks in advance.