The last time we went to Grand Jean the road was pretty rutted. I'm not sure that I'd even want to take our beat-up Phoenix down that. Maybe it has been graded. There certainly are a lot of Idahoans with high clearance TT's boondocking near the hot springs. As far as hiking goes, it is at least 8 miles in from the trailhead before the magic happens.
Stanley is pretty bad, so is Redfish Lake. However, take the ferry then hike a bit, then Cramer Lakes or Baron Lakes---so special! I think God goes there on weekends.