Lefébure-Wély was a famous organist, and his piano works like 'Blondette' often feature elegant, lyrical melodies and light-hearted rhythmic textures. It is a quintessential example of mid-19th-century salon waltzes.
Maintain a steady, graceful pulse in the bass to support the melodic rubato in the right hand.
Comparable difficulty and character — good candidates for what to learn next.
Blondette (Op.144) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 5.
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 Blondette (Op.144) lasts about 4 minutes.
Blondette (Op.144) 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 Bénédiction by Louis James Alfred Lefébure-Wély, Belle of the Ball by Leroy Anderson, American Beauty by Joseph Francis Lamb — see the full similar-pieces list on this page.