Campanile is our go to place as it’s everywhere, easily accessible from a motorway and clean. May not work with 2 children (we only have one, and it’s fine but they may have larger rooms for larger families.
War memorials near Paris? You may want to visit the Mont Valérien (French resistance and WW1 American cemetery) in Suresnes, just West of Paris.
Ibis hotels are usually good value too near large cities (but not only).