Colomer was a Spanish composer who contributed to the salon repertoire. This piece is characteristic of the European romantic style, emphasizing melodic grace.
Pay close attention to voice leading in the harmonic textures.
Comparable difficulty and character — good candidates for what to learn next.
Ballabile 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 Ballabile lasts about 3 minutes.
Ballabile 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 Bourrée by Blas María de Colomer, Ballet joyeux by Blas María de Colomer, Arabesque No. 1 by Claude Debussy — see the full similar-pieces list on this page.