This is a typical 19th-century operatic potpourri intended for home entertainment. It serves as a pedagogical bridge between easier technical exercises and standard Romantic repertoire.
The main challenge is maintaining rhythmic precision while executing the melodic ornaments.
Comparable difficulty and character — good candidates for what to learn next.
Bouquet de mélodies sur 'Le roi de carreau' is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Bouquet de mélodies sur 'Le roi de carreau' lasts about 5 minutes.
Bouquet de mélodies sur 'Le roi de carreau' 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 Bouquet de mélodies sur 'Les contes de Perrault' by Cramer - Pseudonym, Bouquet de mélodies sur 'Les voltigeurs de la 32ème' by Cramer - Pseudonym, Bouquet de mélodies sur 'Requiem' de Verdi by Cramer - Pseudonym — see the full similar-pieces list on this page.