The one that I always recommend is the week long summer camp at U of M. The girls can either sleep in college dorms or commute daily. DD has attended 3 yrs now, great experience. Safe, well-supervised, lots of fun, and they work them till they pass out at night.
Run by Coach "Hutch" and her staff, all the players take groups of girls (age divided) for drills and practice. I try to drive up as often as I can for the daily scrimmages in the evenings, lol---burn up a lot of gas that week, but well worth it.