Very clean facilities. Friendly staff. I only explored sites 1-21, but all of those sites without hook ups are pretty private. Sites with hook ups are more open. There IS cell service, at least with Verizon. We didn’t spend any time on Lake Francis, but I highly recommend paddling at East Inlet (30min east of the campground).
Very quiet and peaceful place. Facilities were cleaned twice a day. Kayak and paddle boat rentals available. Keep your eyes out for loons and bald eagles on Little Diamond Pond. There is no cell service (at least for Verizon users), but that’s exactly what we wanted. There will be ATVs cruising around, so avoid sites along the main road if that noise would bother you (it’s really not bad, though). Note that many of the sites will fit much larger vehicles than what is stated on Reserve America, especially if you have a trailer and can unhook.