Biking in Hamburg

Throughout the entire city it is possible to ride a bike, plus it has many areas where there are paths suitable for cycling or running, One that I liked is the path that surrounds the 2 Alster lakes. Cycling is popular in Hamburg, but do not think of the chaos of Amsterdam, it has nothing to do, the volume is much lower and more controlled. As a tourist without a bike, there are many places in town where you can rent one, the usage is easy, register your credit card and you can use the bike for 24 hours and it is the best because you can stop in many places. The passage of the card is just to charge you a kind of fee (I think it was 5 euros) because the bike is really free, if you return in good condition you those 5 euros paid on account.