Well, I don't find it boring AT ALL.
I really like the well thought-out composition here, placement of the stairs and the girls right in the middle of the stairs, and the "disconcerting" fact that we cannot see what is at the end of the stairs, i.e. what it is one of them is looking at, adds tension to the photo, makes us wonder and thus the photo more interesting.
More people in other, different places would have cluttered this very calm composition which is dominated by the strictly vertical and horizontal lines of the tiles and the very straightfowardly vanishing point of the stairs.
I think I know where this is, could I know it? Not that I have been DOWN those stairs before, but I think I have these tiles in one or two of my photos, too? (Maybe).
ETA: Oops, I am in Critical Analysis! :shock:
Scratch my last sentence, it has no place here. Sorry. (I won't scratch it myself so, I believe in communication beyond just critique - even in class - my teacher were never quite so much on my side, though).