An unusual tip, maybe.
Don't go there when you are sad or depressed. You may just throw yourself from the cliffs or dive into the Ourthe... to escape the harshness of life. What a nice place to "forget about all that" indeed!
What I meant is that it is so beautiful, so serene when you go there. Superb when you are in a good mood but would deepen your sadness and nostalgy if you go there with your spleen. Be sure to not staring at the river too long, you would dive.. for sure!
Maybe some hiking, golfing, cycling would make you "forget about all that" in a nicer way. Hmmm... I am sure it would!
In a good mood, you just appreciate wandering in the city, skirting the river.
Durbuy is maybe THE touristic hotspot in the Belgian Ardennes and everything there is commercialised for the massive tourism that it knows in the highseason. Travellers who dislike these kind of things should not go here, as they will be disappointed. Durbuy is a nice town and has surely some scenic beauty, but you will be in the crowd in the summer months or on public holidays.