This piece is a characteristic Neapolitan song transcribed for piano solo. It highlights the lyrical, sentimental style popular in late 19th-century Italian light music.
Focus on balancing a song-like melodic line over a steady, light waltz accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
'A Grotta 'e Pozzulo is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 'A Grotta 'e Pozzulo lasts about 3 minutes.
'A Grotta 'e Pozzulo 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 'A gelosia by Emmanuele Nutile, 'Na palummella janca... by Emmanuele Nutile, 'O sole mio by Eduardo Di Capua — see the full similar-pieces list on this page.