Lol. Just lol. This is truly one of the most ignorant things I've ever read. Please actually know what you're talking about before you try to criticize someone's advice.
This is how you light indoor areas, properly:
My setup:
In-game:
See? No "light" entity necessary...
And yes, the walkway is an issue. It's half-ass attitude's like this that create such a bad mapping community for Counter-Strike: Source. I think it's obvious that the hallway looks nothing like a real hallway, there is absolutely unlimited room for improvement on it, you must be dense to think otherwise. You're joking if you think the dimensions used for that hallway are anywhere near practical.
Please don't get so defensive and jump to such hasty conclusions, because as illustrated, you're proving to be quite wrong. All I'm trying to do is enlighten you all on some various details.
Also, allow me to reiterate myself in saying that any mapper with common sense absolutely would not use the light entity as the main source of lighting indoors, it's ineffective and generates poor results.