Eduard Schütt was a master of the salon genre, and this work captures the quintessential charm of Viennese late-Romantic waltzes. It features lush harmonies and delicate scalar runs typical of the period's concert waltzes.
The primary challenge is balancing the lyrical voicing in the right hand against the light waltz accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
Bluettes en forme de Valse (Op.25) 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 Bluettes en forme de Valse (Op.25) lasts about 5 minutes.
Bluettes en forme de Valse (Op.25) 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 Bedford-Walzer by Joseph Labitzky, Piano Sonata No. 16 in C major by Wolfgang Amadeus Mozart, Maple Leaf Rag by Scott Joplin — see the full similar-pieces list on this page.