Planning a trip in August with my brother who lived here about 10 years ago. He lived in Dortmund, Altena, Iserlohn, Dusseldorf, Köln, Ludenscheid and would like to see some of those areas again. We live in South-Eastern Germany so my experience there is limited...
Any recommendations of places to see or family friendly places to stay? He'd like to catch a few festivals if possible and we have a small son that we'll be taking along.