The 'Azalien Polka-Mazurka' is a typical example of the light dance music cultivated by Friedrich Zikoff. It balances a tuneful melody with the specific rhythmic accents required for the mazurka style.
The primary challenge is capturing the specific dance rhythm of the mazurka with accurate accentuation.
Comparable difficulty and character — good candidates for what to learn next.
Azalien Polka-Mazurka (Op.65) 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 Azalien Polka-Mazurka (Op.65) lasts about 3 minutes.
Azalien Polka-Mazurka (Op.65) 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 Azalien Polka-Mazurka by Friedrich Zikoff, 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.