Dirt Basement Floor Options?

[Charles Stein]

Hi BP,

I have a dirt floor in my duplex's basement that we would like to make nicer. 

If we pour concrete, we would have to excavate the floor first which we rather not do. The main goal of the basement is for utility access and for Unit 1's washer and dryer. 

I am wondering what options we have. My wife is thinking to put a plastic vapor barrier over the dirt floor and to cover with rubber mats? 

Any ideas will be super helpful.

Thank you!