Sachsenhauser's contribution to the Barcarolle genre focuses on expressive, expansive melodic lines typical of German Romantic piano music. It is distinct for its use of colorful harmonic shifts that add depth to the recurring boat-song rhythm.
Achieving an even, singing tone during the wide-spanned accompaniment patterns is essential for the piece's success.
Comparable difficulty and character — good candidates for what to learn next.
Barcarole (Op.28) 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 Barcarole (Op.28) lasts about 4 minutes.
Barcarole (Op.28) 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 Liebestraum No. 3 in A-flat major by Franz Liszt, 16 Waltzes by Johannes Brahms, Intermezzo in A major, No. 2 by Johannes Brahms — see the full similar-pieces list on this page.