Bizet's Berceuse, often associated with his opera themes, is a masterclass in economy and melodic warmth. It is distinct for its balanced, vocal-like structure that mimics the cadence of a lullaby perfectly.
The primary challenge is the expressive, sophisticated voicing of the right-hand melody against the constant left-hand pulse.
Comparable difficulty and character — good candidates for what to learn next.
Berceuse is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 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 3 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 Berceuse sur le nom de Gabriel Fauré by Maurice Ravel, Albumblatt für Frau Betty Schott by Wilhelm Richard Wagner, Berceuse sur le nom de Gabriel Fauré, M.74 by Maurice Ravel — see the full similar-pieces list on this page.