Klaus is the best swimming teacher! His method - intensive learning in 5 days - is the most successful way of teaching adult non-swimmers. I did not have a lot of confidence in my first class because of my failed swim classes before. I remembered thinking I would get my money back if I fail to learn. The transformation is huge for me, with two weekends of classes, I went from being not comfortable in the water to enjoying jumping in the water and swimming to the other end of the pool; from only knowing swimming free style under the water to swimming competition style breast stroke and back stroke. Klaus was so nice and invited my husband during my last day of class. My husband has been swimming since he was a toddler and Klaus was able to teach him to float on his back which he never learned from YMCA lessons.
I guarantee that you will not find a better way to learn to swim as an adult.