Joachim Raff's '3 Salonstücke' Op.56 are likely charming and well-crafted miniatures from the composer's prolific output. They would have been appreciated for their melodic invention and approachable pianistic challenges.
Paying close attention to dynamic shaping and achieving a rich, resonant sound are crucial for these pieces.
3 Salonstücke (Op.56) 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.
3 Salonstücke (Op.56) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.