Henri Herz was a famous virtuoso of his day, and this piece demonstrates the ornate, melodic style prevalent in his salon works. It features expressive lines over a supportive harmonic texture.
Achieve a singing tone in the upper voice while managing the delicate ornamentation.
Comparable difficulty and character — good candidates for what to learn next.
Californienne (Op.167) 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 Californienne (Op.167) lasts about 5 minutes.
Californienne (Op.167) 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.