Actually, I'm not even sure if the "second-last" is the correct term. Here is how I would use it:
Go down the hallway, it's the second-last door on your right.
which I want to describe the door that is immediately next to the last door.
What are other ways to describe it?
Can I say, e.g., next-last?
Also, how about the one that next to second-last? Can I say third-last?
EDIT: broadening the usage, can I say "this is the next-best choice"? Are there any other ways to express it?