The places which you should see in Paris are located in different parts of Paris. Try to get a reasonable accommodation near to Champs Elysees. Most of the hotels in Paris will be organizing 'Tour de Paris' at a special rate so look for something which will cover the night life as well. Please note that taxis are quite expensive in Paris.

Chairboy, Why do you want to send the OP to Pigalle the red street of Paris?

N.B. If you are using metro please keep all your money and valuables safe as there are lots of pickpockets in the metro.