We have apartments like Trust posted, but we call them town-houses or something similar. We don't really call them apartment buildings.
What Blaze posted is what we generally have around here.
That's assuming several things that aren't necessarily true. For example, the employee might have not been in your building and may have trouble finding your room.
Also, the dorms here have access locks that don't let you in (I have to go through 2-3 of them, depending on which way I enter the building) unless you swipe a magnetic beacon across them.
Ultimately, it could very well be the case that the pizza man takes longer getting to you than it takes you to get to him and back.
The employee might have trouble finding your room, but it probably doesn't take him twice as long as it would take you. I find the longest part is usually the elevator ride (or stairs). But you're right, depending on apartment lay-out it's possible.
I've only ever seen external locks, at the front foyer (or whatever), which can be remotely unlocked. So that's not an issue here.
You're right, that's the bottom line
Men of the square table:
The deciding factor should be whether or not the delivery guy is close to the guaranteed delivery time. If it is believed that you will get free pizza by making him walk the extra way to your room, then he should be made to take the journey. The only exception is if you're too drunk to walk down to get the pizza.
Man Law!
Pizza places don't have guaranteed delivery times here. You typically get it in 30-45 mins, no matter where you live, unless they're extremely busy.