I've been asked to recommend kosher restaurants in Jerusalem and Tel Aviv, but to be honest I can't think of a restaurant truly worth recommending. For instance, Hachatzer (sic) in Jerusalem has great food - excellent - but the atmosphere is classic kosher restaurant: noisy, screaming kids, awful furniture. Best kosher restaurant in TLV in my view is Pacific Bistro and Sushi - good atmosphere, great views, decent food. But not outstanding, like, say, Messa in Tel Aviv, which isn't kosher but which is excellent.
But I haven't been to all of them. Are there any kosher restaurants that are recommendation-worthy?