Well sung and produced bossa nova. Great composition. I would like it even more as an old fashioned, not so sweatened versio without the strings etc.
One of my favourite records is Getz Au Go Go: the New Stan Getz Quartet (vibes Gary Burton!) featuring Astrud Gilberto recorded live in 1964 at Cafe Au Go Go, Greenwich Village, New York. If you can, please listen it and remix your fine song in that style. Then it would be perfect!