What is the effect of the last two lines of the first stanza? How do these lines contrast with the earlier part of the stanza?

Not Adlestrop, no – besides, the name
hardly matters. Nor did I languish in June heat.
Simply, I stood, too early, on the empty platform,
and the wrong train came in slowly, surprised, stopped.
Directly facing me, from a window,
a very, very pretty girl leaned out.

What is the impact of starting the sentence with ‘Directly facing’?
What is the effect of the repetition of ‘very’ and the use of italics the second time?
What is the effect of two ten syllable lines compared with the earlier line lengths?