Here is Vals by Dionisio Aguado (1784-1849). You can find the score in Eythor Thorlaksson’s Guitar Moment II.
I didn’t spend long on this one, about two hours altogether. It was fairly easy to memorize, taking about an hour, because several passages are repeated, but technically it’s a little trickier than previous pieces because there are shifts of left hand position. Here’s my recording, such as it is: