I am sure there are plenty of possibilities however it would help to know your priorities, e.g. are you looking to control costs or are you traveling on an expense account?

If you are traveling on a budget, I would suggest the following, keeping in mind that "budget" is a relative term considering the weak dollar against the euro:

- At Mumbai request for your bags to be checked all the way through to SEA (it is allowed to check bags through as long as your connection flight departs CDG before 12:00 the day after you arrive). Take just a carry on with the items you will need for 1 night in Paris

- Upon arrival at CDG take the train (RER line B) to Paris St. Michel Station. Cost is 8.20 euro and takes about 30 minutes. From here you'll be in middle of Latin Quarter/St. Germain area, Notre Dame Cathedral, etc. Great areas for walking and plenty of restaurants. Plus you are right at the Seine and can take a nighttime boat ride (touristy but worthwhile to see some sights lit up at night, including Eiffel Tower). Champs Elysees and the Louvre Museum are easy 10 minute metro ride from St. Michel. I would also suggest any of the bus tours (approx 25 euro) as you will have a chance to see a lot of sights and maybe pick one or two to explore in more detail.

- Choose a modest hotel close to the St. Michel Station. I have stayed at Hotel de Suez, Le Saint Severin, Hotel Abbatial and Hotel Agora which are fine for your needs (Suez and St Severin are closest to the station, about 3 minutes walk...the other 2 are maybe 7 minutes walk). You should be able to get something around 100 euros per night single (check their web sites and/or be sure to ask if they have any promotions).

This is a start. If you have specific interests or questions, post them so you can get the best possible response.