Schubert's 'Ave Maria' (Ellens dritter Gesang, D. 839) is a beloved lied that has been widely transcribed for piano. Its musical distinctiveness lies in its simple, flowing melody, which creates an atmosphere of profound peace and devotion.
Focus on creating a beautiful, singing line in the melody and utilizing the pedal to create a rich harmonic cushion.
Ave Maria D.839 is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Ave Maria D.839 lasts about 4.5 minutes.
Ave Maria D.839 is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.