Anton Strelezki's Bon voyage is a sentimental salon piece that makes use of lush, late-Romantic harmonies. Its distinctive feature is the expansive, sweeping melodic line that requires expressive voicing.
Develop control over large, expressive phrase shapes while balancing the voice leading in the inner parts.
Comparable difficulty and character — good candidates for what to learn next.
Bon voyage is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
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 Bon voyage lasts about 5 minutes.
Bon voyage 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 By the Brook by Anton Strelezki, Berceuse by Anton Strelezki, 'O sole mio by Eduardo Di Capua — see the full similar-pieces list on this page.