What's wrong with this sentence. Or, what makes something klunky?

[MillieDynamite]

I'd write it this way: "He realized he'd had enough." Or if I got really into the triple contraction, "He realized he'd'd enough." No, that triple doesn't trip off the tongue like Shouldn't've.

We took our seats at the table to which the hostess had brought us.

The hostess brought us to our table, and we took our seats.

As for me, I HATE when a sentence contains "had had," as in, "He realized he had had enough." It may be grammatically correct, but I hate it! But sometimes that's what you have to do.