We know nothing about Paris. We will be there for 3 days in September. With two college students, what areas of town would be best to try to find a hotel in that will make most sight seeing walkable? We're talking all the general touristy sites, plus would like to find local cafe's and restaurants as well. Our hotel budget needs to try to be under the $160 a night. FLying in to CDG and out of Orly.