I got to see @andrea.nelson.art and I cannot wait to see her again!
Do I regret going on this art retreat...no, would I go on another? Ask me in 6 months. My current answer is no, but with time things change. If you are going on an art retreat pack a lot of snacks, not just a few, a lot, especially if you're in a remote location. You never know how much they are going to feed you. Maybe get a car so that if you need to drive to the local town for groceries you aren't an hour hike away.
My favorite parts of the trip were seeing Andrea, making lots of new amazing, interesting and talented friends, the scenery, exploring Spain, and spending time floating in the pool.