Luz de Luna is actually an art gallery created by the Landy Mesis, a Cuban artist. I met Landy back in 2012 and we've been friends ever since.
The space is a work in progress so feel free to knock on the door and check on the latest happenings. You'll be delighted with the impressive array of mosiac work he's done over the years with themes ranging from Cuban ballet to local architecture to religious icons. All the work is done by hand in his workshop and some pieces can take months to finish.
Have a look around if it's open, check in with Landy and friends when you see them, and share your stories of Geocaching! If you want to see a local home, pop in next door at Casa Don Luca to see a casa particular!
The cache: You're looking for a container located outside the of the gallery. It'll be accessible 24/7 but since local muggles are always lurking, extreme stealth is required! I truly recommend a night find if you can swing it as you'll be less conspicuous.
Congrats to TheOndra for the FTF!
2024 Update: Cache has been upgraded to a secure container. Make sure to enter the correct c000de.