Frankly, I don't recommend Soon Line: we left to offer a week of surfing to 4 teenagers. 1st day, for organizational reasons for Soon Line, although we had reserved for 11 a.m., we found ourselves surfing in the evening... unfortunately, lousy weather (not Soon Line's fault) and above all a teacher who was not very concerned by his course while there were 2 teenagers who had never surfed: no feedback on postures, no personalized advice, just the basics... in short, these 2 teenagers didn't really want to continue. One will continue, the other doesn't want to hear about surfing anymore. The next day, I go back to the store and tell them that someone no longer wants to continue. No problem. We remain flexible on schedules, we change teachers, without problem.
At the end of the week, I go back to the store to get reimbursed for the lessons the teenager didn't take. And there, big problem: they refunded me €40 (I was so angry I didn't accept) claiming that I had been entitled to reductions (without notifying me!!!). In short, they are crooks: some teachers are good (the problem does not come from them).
My advice if you go to this surf school is to make an appointment just one day in advance and only pay at the end of the course.
2nd tip: avoid this surf school, there are many others!