Kadermo Ashtanga Yoga Retreat. In the summer season from June to August you can come to stay for a week, two weeks or as long as you like up to several months. You could also join us just for a weekend workshop. However, if possible, we recommend that you stay 2-3 weeks or longer in order for you to benefit the most from your experience. Of course, the longer you stay the more economical it is for you. During the rest of the year we arrange monthly weekend workshops. Also, longer retreats (5 days or longer) are held during Easter holidays, Christmas and other long holidays.