Where I used to board, before I moved to my property was quite good. I still get my lessons there too.
Its a very small barn. About 12 boarders. All teenagers or young adults. The 2 ladies who run the barn are quite nice and deal with each horse on an individual basis.
They understand that every horse is different and as such, need to be dealt with differently.
They will patiently hold the horse for the farrier, worm the horse who hates being wormed and discipline horses. By discipline, I mean GRR and Yell at the horse. And if its being a ****-head, back it up, tug on the lead rope, and if worst comes to worst, hit it on the shoulder. NO, they don't use excessive force, and we are taught to get ourselves out of situations like that. BUT if the horse is not behaving and you've tried everything, they will let you hit the horse. BUT if they think your being cruel or hitting it too much, they will evict you.
Late board is acceptable, provided you notify and tell them when you will be paying it. They understand too, that people can lose their jobs and will happily board your horse for a 2 week period until you work something out with them.
You get what you pay for. So if you pay for full board and care, you'll get full board and care and your horse will be looked after. If you pay for just board, you get just board.
They notify you when your horse is hurt, they call the vet, they are quite good.
And they are the bestest kindest instructors ever. They are like my family.