Fair Price for 2016 summer gigs

I have been kind of busy this summer with my new project. "Taking over a resort in northern Minnesota"
Here are the questions.
Looking at the pictures and the settings, what would be a fair price to pay for a afternoon gig on the patio for a casual gig. Lets say a Trio, folk singer or small 4 or 5 piece combo.
Not a whole lot of people to play for but a beautiful setting just to gig and have fun.
My first year here running the place has been very successful, 87% of the people who stayed here this summer are coming back for 2016. This has never been done at this resort to my knowledge.
What are your thoughts on this. Go....no go.... good or bad idea.
Here are the questions.
Looking at the pictures and the settings, what would be a fair price to pay for a afternoon gig on the patio for a casual gig. Lets say a Trio, folk singer or small 4 or 5 piece combo.
Not a whole lot of people to play for but a beautiful setting just to gig and have fun.
My first year here running the place has been very successful, 87% of the people who stayed here this summer are coming back for 2016. This has never been done at this resort to my knowledge.
What are your thoughts on this. Go....no go.... good or bad idea.