William Sterndale Bennett was a pivotal figure in English Romantic music. This piece exemplifies his melodic, Mendelssohnian style with graceful, idiomatic figurations.
Developing a fluid and expressive legato in the right hand is essential for this piece.
Comparable difficulty and character — good candidates for what to learn next.
Allegro Grazioso (Op.18) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Allegro Grazioso (Op.18) lasts about 4 minutes.
Allegro Grazioso (Op.18) 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 Piano Sonata No. 11 in A major by Wolfgang Amadeus Mozart, Andante favori by Ludwig van Beethoven, Belle of the Ball by Leroy Anderson — see the full similar-pieces list on this page.