This appears to be another arrangement or version of Ernesto Nazareth's 'Beija-Flor,' characterized by its graceful melody and the infectious rhythm of the Brazilian tango. Its musical appeal lies in its melodic sweetness and engaging rhythmic drive.
Requires a sensitive handling of dynamics and a clear differentiation between melody and accompaniment.
Beija-flor, IEN 52 is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 4.
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 Beija-flor, IEN 52 lasts about 3.5 minutes.
Beija-flor, IEN 52 is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.