DS has chosen Paris as his preferred destination for an "adventure" this summer.
I'm a single parent so it will just be the two of us. He definitely wants to go up the Eiffel Tower and on the Metro.
I don't think he knows what else there is to do there! 
I have been before, about 15 years ago, with a boyfriend and we did typical touristy things, Arc de Triomph, Notre Dame, the Louvre.
Has anyone been there with a young child/children before? What did they like best? Is anywhere particularly family unfriendly?
And lastly, does anyone have any tips for accommodation?