Julius Röntgen's work exhibits a rich, late-Romantic harmonic vocabulary that bridge the gap between Brahms and the turn of the century. This piece is a sophisticated study in tonal color and phrasing.
At Henle 5 this is a late-intermediate piece — technically substantial, with musical demands to match. The main demands: chord voicing — bringing out one note inside a handful of others; rubato that must breathe naturally without losing the pulse; and careful pedaling — clarity depends on the foot as much as the fingers.
Beyond that, expect a true singing tone, with the melody floating above the accompaniment.
The main challenge is balancing the intricate polyphonic lines within the inner voices while maintaining a fluid melodic line.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Dolce far niente (Op.60) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 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.
A typical performance of Dolce far niente (Op.60) lasts about 4 minutes.
Dolce far niente (Op.60) 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 Buiten by Julius Röntgen, Ballade No.1 by Julius Röntgen, Ballade in D moll by Julius Röntgen — see the full similar-pieces list on this page.