I have been to Mayfield Falls twice. It is not anything like Dunn's or YS but it is very fun. It is more like a winding shallow river that goes uphill. You walk with a guide through the Falls / River. There is a tree you can climb and jump from and a set of hollow rocks you can swim thru. At a very quiet location with a bar/ grill onsite and a couple shacks with crafts.
I enjoy it.