kid-friendly hotel within walking distance of the Eiffel Tower?

We'll be taking the kids (5 & 8) abroad for the first time next summer, and one of my eldest's special interests is the Eiffel tower. We'll be spending 3 nights of our trip in Paris, and I would love to find somewhere to stay that is within walking distance of the tower, or an easy trip on transit. Bonus for a window view (though I think it will be out of our budget!).