Liszt's arrangement of Arcadelt's choral work highlights the transformation of Renaissance polyphony into a Romantic piano aesthetic. The work is marked by its simplicity and purity of tone.
Avoid excessive rubato to maintain the essential clarity of the original choral lines.
Comparable difficulty and character — good candidates for what to learn next.
Ave Maria d'Arcadelt 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'Arcadelt lasts about 3 minutes.
Ave Maria d'Arcadelt is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Ave Verum Corpus de Mozart by Franz Liszt, Ave Maria (Die Glocken von Rom) by Franz Liszt, Ave Maria after Schubert S558 by Franz Liszt — see the full similar-pieces list on this page.