Nope, haven't found a suitable "restaurant" or dinner club-type map, but I sure wish they'd make one. The one you're suggesting is the closest one I've found thus far, and IMO it's not a fair match. Heck, even the Cage Fight map from Arena would be useful because at least it has tables and a bar, but again, too small, and not elegant in any way.
If I could wish it: 3 maps of restaurants, for small and medium sizes. Include a bar, ambient music, and maybe even a dance floor for one (for a more "clubby" atmosphere beyond what the rave map currently has).
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I'd like a restaurant with a sizable kitchen for an exciting shootout. 
Both formal restaurant and fast food would be good. >_>
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Does anyone know of a good map that involves a restaurant? I'm new to the game so the only thing I've found is the Lucky Six under the Unique Maps -> Casino. Technically it isn't bad with the exception of the fact that the restaurant portion is on the other side of the map (well, and the fact that it's exceptionally small but I'm fine with that).
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