Very good downtempo track. It's not ambient, because ambient should be devoid of rhythm... At least that's what Wikipedia says. :->
Anyway, I liked it, although it's not perfect for me. The main melody played on xylophone-like instrument is too simple and cute and contrasts with the accompaniment. I'd prefer if it were darker.
Next, the accompaniment is too... how to say it... "polite". It just flows quietly in the background, while I feel it should break to the front and "attack" the melody from time to time. It would add a dramatic effect to otherwise too smooth tune.
And the main complaint (but connected with the above) is that it's too repetitive. This tune begs for any change in dynamics, melody, rhythm, anything! :-)
Oh, you can breath now. ;-P