My DD got this bike when she was just 4 and will be passing it on to DD2 this Christmas, she used it everyday to bike to nursery - 4km each way (we live in Copenhagen)- for a year and it is still in fantastic condition.
Nice and lightweight meant she picked up cycling straight away and did not need to use stabilising wheels after using a running bike.
It's not a cheap bike, but we will use it for two children, I expect DD2 will probably use it 2 years as she will be younger than her older sister when she starts with it and they hold their value incredibly well for selling on.
It's very robust but does not come with mudguards or a basket as standard so we added those. It has also been used on forest trails and again performed very well.
Highly recommended for all children