I do super-tiny and pretty cheap “Studio” workshops (for just 4 paying participants, named after my studio office which is just a nicely-converted double garage). I live near a national park and that’s part of the attraction, but it’s sufficiently work-oriented that employers do pay (though most of my clients are independents). I’m getting people back for second helpings after big city workshops and it’s a nice change for all involved.

I have been to unconferences in mountain resorts. Actually great experiences but they’re not cheap. The very significant advantage is the intensity of the experience.