Pros
You can walk away with some good items for the resume as the agency is small so there's lots of opportunity to be hands on.
Cons
Let's start with the fact that many of the positive reviews here were written by current employees who were "strongly encouraged" to do so by the CEO. So essentially they are plants, not real, honest reviews. The CEO is incredibly charismatic. She could sell ice to an eskimo. During your interview process, she does an incredible job of painting a rosy picture of the company and lays out ambitious growth plans, of which will, of course, include you having incredible new opportunities. She oversells the agency a lot, telling gilded tales of big clients and projects, many of which she fails to mention were over a decade ago. She has a decent circle of business in Boston (which tends to fluctuate), but no substantial reach outside of Boston. Much of the way the company positions itself is how it would LIKE to be, not how it actually is. The work environment is unstable and unstructured. Turnover at this agency is incredibly high. I encourage you to go on LinkedIn and use the search filter to look for people who previously worked there. You'll see stints as short as a few months before people have moved on. Why the turnover? Mostly the CEO and her lack of good leadership and people management skills. Micromanagement is a huge issue, and has been for a long time. Things that require approvals will take a long time to be approved by the CEO. Your work will get backed up, and then you will be flooded with work, then expected to meet her tight deadlines, even if you've been waiting for her for weeks. The CEO uses coded language as a manipulative tool to stretch the team incredibly thin. When she tells you you're doing a great job and she wants you to "elevate," run for the hills. That's coded language for "I want you to take on even more work, at the same rate of pay." You cannot raise your hand and say you think it is too much, as there will be repercussions. She will pin the very survival of the agency on you, and she expects an employee to put in as much work as an owner of the firm. Agency life is stressful. But this agency and its leadership is really unlike any other. I encourage you to steer clear.