The restaurant in the Eiffel Tower is EXTREMELY expensive. I would not eat there unless you expect to spend a ton of money. (I'm not sure how to convert the cost for you) but I think it was about 75-100 dollars a plate. Hotels will vary depending on when you go and where. If you stay outside the city, it will cost less and stay in a big chain hotel like Holiday Inn or something. The Paris Chateau's are beautiful but they cost a ton! August is the most expensive month to go. Prices will double in August because Paris becomes the number 1 tourist spot for Europe.
I'm sorry I don't have a direct price for you, but hopefully these tips will give you an idea of what you need to do to save money.