I'm actually planning on Frankfurt to Amsterdam train route myself in the summer .
There a few great stops or one night stays during the way up there .
I'm big milf fan here and I would highly recommend Den Haag . I'm too spoiled for choice there all types of milfs in double street and great prices and huns/glen has a few milfs there I still regret missing out on a older posh milf there years ago .
One of my favourite cities is Den Haag
Also there is no RLD in Rotterdam so I would give it a miss unless you want a higher price private escort but its not the same as walking up and down double street in Den Haag
if you planning on checking out where some RLD on the way neurosynth map is all you need .
https://www.google.com/maps/d/viewer?ll ... tDe3i0kXOAGood luck mate