Bellenot, known primarily as a church organist and composer, brings a harmonic depth to this lullaby. The piece features chromatic inflections that differentiate it from more simplistic contemporary salon works.
The main challenge is the smooth transition between the shifting harmonic colors while maintaining a steady pulse.
Comparable difficulty and character — good candidates for what to learn next.
Berceuse 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 Berceuse lasts about 4 minutes.
Berceuse 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 At Twilight by Percy Grainger, Berceuse by Theodore Akimenko, Albumblatt, BV 272a by Ferruccio Busoni — see the full similar-pieces list on this page.