Sirotek, meaning 'The Orphan', is a poignant piece by Dvořák that captures the Slavic folk idiom common in his miniatures. Its distinctiveness lies in its shift between delicate, sorrowful melodies and rhythmic tension.
Carefully manage the left-hand accompaniment to support the expressive, sighing motifs in the right hand.
Comparable difficulty and character — good candidates for what to learn next.
'Sirotek' (Op.5) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 8.
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.
A typical performance of 'Sirotek' (Op.5) lasts about 4 minutes.
'Sirotek' (Op.5) 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 Pavane pour une infante défunte by Maurice Ravel, Quejas, o la maja y el ruiseñor by Enrique Granados, Bethena by Scott Joplin — see the full similar-pieces list on this page.