Bonitinha is a character piece by Brazilian composer Abdon Milanez known for his work in the 'Choro' style. It features an idiomatic, song-like melody supported by light, rhythmic piano textures.
The performer must bring out the inner voices to create a richer, more expressive sound palette.
Comparable difficulty and character — good candidates for what to learn next.
Bonitinha 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 Bonitinha lasts about 3 minutes.
Bonitinha 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 Für Elise by Ludwig van Beethoven, Pavane pour une infante défunte by Maurice Ravel, Brigg Fair by Percy Grainger — see the full similar-pieces list on this page.