Business Lunch - Between Rock Center and Grand Central
From what I've read, the food at Cipriani is awful. And it's very expensive.
We just had lunch for the first time at La Fonda del Sol, in the MetLife Bldg. The entrance is on Vanderbilt & 44th, just down the block from Grand Central. The food is superb, and the dining room is very attractive and comfortable. Prices are quite moderate for food of such high quality. Since it was Columbus Day, it wasn't very busy. But our server told us they normally get a big business lunch crowd. I think it would be perfect for a client lunch.
You can see photos of what we ate and of the space here: http://www.flickr.com/photos/11863391...