Here's the rest of the story, just because I've got it here.
The next day, the man tours around the small town, talking to the locals about nothing in particular, forgetting his experiences outside room four temporarily, but throughout the day, his thoughts always turned back to the beautiful woman he saw in the room.
That night, walking past the woman at the front desk, greeting her, he walked up to his room, making a short detour at room number 4.
Tonight, all he can see through the keyhole is red, a vivid red color, as if someone had placed a sheet of red paper in front of the keyhole, so one could not see into the room.
The man, realizing he can't see through the substance, goes to sleep after packing the few belongings he won't need the next morning.
The next day, he checks out of the hotel and makes small talk with the woman at the front desk about the room, slightly pressuring her for information. After a short while, and the promise that the story will go no further than him, (he obviously failed, or I wouldn't be telling you now, would I?), the woman tells him the story.
I can't quote exactly what she said, but apparently, the story is that a newlywed couple arrived at the hotel late one night. The man, feeling pressured about the wedding had had an affair with one of the bridesmaids, and later had an argument with his new wife, which rapidly escalated... to a fatal level.
The man, out of pure rage murdered his wife and then fled the scene, and has never been seen since.
One of the most interesting things about this couple, with the exception of the murder, of course, is that they were both albino. What this means, is that their bodies had no pigment. Essentially, pure white all over their body, hair, skin, as white as (if not whiter than) ghosts.
On an unrelated note, eye coloring is made through pigment, a lack of which doesn't mean that your eyes are white, it just means that your irises are transparent, showing the bright, vivid red blood behind them.
