funny thing, for the last three weeks i've been planning a similar trip... all got cancelled right after i finished my research

hope to have time to post some links later today (very tight timing unfortunately, going on holidays tomorrow)

till then, here's some quick help:
- i was unable to find a decent hotel for less than E150/night; if that's the budget, it's a gamble unless someone can recommend a good hotel;
- try Best Western Premier Bradford Champs E... - suites for 3 and 4 pers for less than E200/night'
- i used the following rationale (in my case, we're 3 pers and did not mind sharing a suite for 2 nights): focused on getting a suite for E240-300/night instead of two rooms for E120-150/night each; as a result, for this budget you could get great rooms and packages hotels Napoleon (room with view over the Champs E), Clarion St-James (Rue Rivoli, Jardin des Tuileries!) and even hotel Littre (go for a top floor toom with view).

links:
www.paris-tourism.com :-:
www.parisby.com :-:
www.ratestogo.com :-:
www.parisnet.com
www.tripadvisor.com (for more guidance re: hotel reviews)

hope this helps

cheers!