Adolf Lotter was a prolific composer and arranger of light orchestral and piano music in the early 20th century. This piece is a typical sentimental romance featuring a sweeping, lyrical melody supported by lush harmony.
The performer must master the art of rubato to keep the melody from sounding mechanical.
Comparable difficulty and character — good candidates for what to learn next.
Awakening of love 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 Awakening of love lasts about 4 minutes.
Awakening of love 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 Für Elise by Ludwig van Beethoven, Pavane pour une infante défunte by Maurice Ravel, Brigg Fair by Percy Grainger — see the full similar-pieces list on this page.