Meridien Intel
The other 2 guys gave you good gouge, here is some more.
Right before you hit Indiana's there is a street to your left. Hang a left, and you have about 2 miles worth of cafe's, restauarants, bars. All sorts of cuisine.
If you go back to that first intersection you crossed, and go left instead of right, there are many more restaurants. If you go all the way to the corner, hang a right, and walk to the next major intersection, hang a right, and you have a about a mile's worth of restaurants, cafes, etc.
There is also a very large train/metro station across the street from the hotel. You can get on the metro there, and ride it up to any of the major attractions (museums, etc.) The concorde station is right near the Westin we used to stay at, right at the west end of the Tulleries/Louvre.
And yes, your per diem will not get you far.