Well of he's checking on the horses chances are he's pretty nice, if he cares enough to check on them even after life.
The barn I used to work at had the creepiest washroom, we couldn't use it and no body wanted to. It was always dark in there and old next to useless tack was kept in there until it could be disposed of properly (there's a dump down the way so I think they were just waiting until they had enough stuff to make the trip worthwhile, more then a few ols school saddles and bridles) and the tack made creepy shapes and shadows around the room. There was an old rain sheet or something hung up that looked a bit like a person.
That said most barn are creepy at night. Even the ranch barn, which I've slept in creeps me out a little mostly because it's right at the edge of a forest so small animals can get in easily and I'm never sure if that rustling in the corner is a friendly barn cat or. Face eating raccoon.
Equestrianism; 10% luck, 20% skill, 15% concentrated power of will, 5% pleasure, 50% pain and 100% reason to remember you're absolutely insane to be riding a beast that big.