A little help requested..

Hi there!
I have to write an assignment for my literature class about Ernest Hemmingway's 'A clean well-lighted place' and I'm a bit stuck with the narratological analysis. If anyone can help me please? I would be very thankful :)

I think I can pull the analysis off, but the thing is that everything starts with the focalization. So if I would get that wrong, the rest of my analysis would be a bit contradictive. My question now is: What's the focalization of this short story? Are we dealing with an external or an internal focalisator? (! I was told that this is NOT the same as a simple narrator)
And could someone also explain me how this is shown?

This is the link to the story (it's only about 2 pages)

Thanks a lot!

http://www.mrbauld.com/hemclean.html

Whoops.. Forgot the link. Here it is :)