A standard 70s sitcom, in most ways. I remember it as having the standard "wacky" plots and few, if any, real surprises. It was a cute show. I was prompted to look it up today because of the parallel nature of the plot with the more current "Dharma and Greg". Just replace Catholic with Hippie and Jewish with Staunch Republican.
I'm surprised that CBS actually caved-in to cancel a popular show, just due to hate mail. I didn't know anybody at the time that even remotely considered this fluffy, light entertainment program to be controversial, or shocking. If CBS had any sense, they would have played up the controversy to boost the ratings. No apologies!
It was simply a "feel good" show about a couple who lived in an apartment over a delicatessen who had nosy, annoying parents.