I was on a 4 days windsurfing course and it was great. I am a beginner, so I couldn't make it to the 4th day. I was too tired by the end of the 3 days. But the equipement was good and so was the instructor. I believe most of them are Italian, but you can get along very well with English. I learned how to do the tac, the jibe and even try a bit the harness. Always felt safe and the instructor was near me at all times. Just be careful how many days you book if you are a beginner. I also recommend the paella at the restaurant near where you do the windsurffing.