Dark Rome Tours

Has anyone used Dark Rome Tours? We are looking at their tours from Florence and they get rave reviews online, but I thought CC would be the place to get some other opinions. We specifically were looking at the Cinque Terra trip from Florence. It's a 13 hour tour (long day), but that is one place I've never been and would be open to comments. Thanks.

Not sure when your going, I am going to Rome in October and today I booked and paid for a Vatican tour with them. I figure the reviews were good so I went and did it.

Kathy