Schuecker's 'Barcarolle' likely embodies the gentle, swaying rhythm of a boat song. Its charm would stem from its melodic lyricism and smooth, flowing accompaniment.
The main technical focus will be on creating a seamless legato line and a steady, rocking accompaniment.
Barcarole is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7.
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.
Barcarole is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.