Try Fernando Sor - Malbrough Variations. It's not a long, but is a beautiful, piece and it is written for the Classical guitar so you will have to work out for yourself which hand plays which notes and the fingering. Unusually, for a guitar piece, there are no big 'guitar' chords and virtually every note is playable on the piano as written. I've been playing it for some years and, although it is not difficult, it satisfies me musically. If you get chance to hear any of the leading classical guitarists recordings they all have different interpretations.
Topic: Spanish music