I enjoyed it, not quite as much as Last Resort and Revolution, but enough to keep watching and see how the story develops. It kind of reminds me of a serious version of the musical, Damn Yankees. Terry O'Quinn is enough for me to give it chance.
I do like the name, again for nostalgic reasons. It reminds me 666 Fifth Avenue, another iconic building in NYC, which house a wonderful find dining restaurant called Top of the Sixes. I ate many a delicious mean there. It was frequented by the power brokers and social set of the time. As you've probably guessed, the restaurant was on the top floor. Giant red letters, 666, was prominent on the roof and could be seen for miles. Some things you don't forget no matter how many years later. :