Where my horse lives...let's just say it's not ideal.
The barn has the best training in the city, is only 20 minutes away from my house, AND it employs me during the summer but it houses about 120+ horses on 20 acres...you can see where this is going.
He lives in a 12x12 stall most of the day and for two hours, he gets turned out in a dirt paddock with a one other horse. They just sort of stand around doing nothing. At least he's a calm guy who hasn't known what it's like to live out all the time, and honestly I don't think he'd thrive like that. He's a sensitive type, gets picked on if he's in a big group and loses weight in the summer because of the heat and flies.
The riding rings are nice, a bit deep in my opinion, but they get watered and dragged regularly and there's lights and nice jumps. Each boarder gets a tack locker and a space for their trunk. Lit grooming stall with a fan for cooling off and outlets for clipping. Wash racks with good water pressure.
His stall is at least a large-ish one (I haven't measured it but I'm guessing it's about 14x16). I love my trainer and the other people at the barn. It's very low key and relatively drama free. I just wish my horse could spend all day outside.