This is a quintessential salon waltz by the prominent Mexican composer Felipe Villanueva. It is renowned for its graceful melodic curves and characteristic 19th-century salon style.
The main technical hurdle is achieving a light, airy touch on the left-hand chords while maintaining a fluid, singing tone in the right hand.
Comparable difficulty and character — good candidates for what to learn next.
"Amor" Vals de salón 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 "Amor" Vals de salón lasts about 4 minutes.
"Amor" Vals de salón 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 Amar... Nocturno para piano by Felipe Villanueva, Belle of the Ball by Leroy Anderson, American Beauty by Joseph Francis Lamb — see the full similar-pieces list on this page.