LH specials are highly recommended. Bring or bribe a person with a kid in a stroller and you get bumped up to the front of the line at the museums.
If you end up with the "International" Hotel Mercure 4 Star near the Eiffel Tower, note:
1. 4 star is actually the name of the damn place and not the quality of the place. Also note:
2. the en suite "seating area" is in fact akin to a twin bed made up like a sofa. Bad on the eyes but probably useful for sharing rooms.
3. attempting to plug in any electrical devices, even the ones provided by the hotel may result in shorting out the electricity. They are however speedy to fix it, regardless of how many times you fry the place up. Allegedly.

Only complaint is that DeGaul airport is dingy, boring and well all around sucky if such a word exists.