This piece by Jean-Amédée Lefroid de Méreaux displays the refined, ornamented style of early Romantic French piano music. It features a decorative, song-like melody that prioritizes grace and lyrical expression.
Ornaments should be executed with precision, sounding as natural extensions of the melodic line.
Comparable difficulty and character — good candidates for what to learn next.
Bonheur de se revoir (Op.39) 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 Bonheur de se revoir (Op.39) lasts about 4 minutes.
Bonheur de se revoir (Op.39) 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 Berceuse by Jean-Amédée Lefroid de Méreaux, Boléro by Jean-Amédée Lefroid de Méreaux, 'Les Cloches' by Jean-Amédée Lefroid de Méreaux — see the full similar-pieces list on this page.