We only had very little time in Luzern and decided to go on amix between nature and urban hike through the forest to the city and along the lake. All in all it took around 2.5 hours and was a very beautiful tour. Just one small part of the route along a street is not as pretty but did not take.longer than 15 minutes to pass.
Try to go when it is not as sunny.
Visited on Jul 2018