We stayed at Custers Gulch www.custersculch.com
. Owners and workcampers couldn't be nicer. Sites were very large and reasonable.
Did not use the facilities so I can't give you an honest evulation there.
I know you are going to see Sturgis, but be sure to spend some time in Custer as well as Deadwood. Great area!
Will stay there next time we are in the area.
Have a blast !