Avantages
Friendly colleagues and a relaxed atmosphere and dress code. 1 or 2 work from home days per week depending on your department. Very likely an excellent place for young parents to work. Far more generous with time off than the majority of U.S. based or U.S. owned companies I know of at least. Time off more closely mirrors European companies which is lovely.
Inconvénients
One on ones with your manager are meant to be helpful but they can be worrisome, especially if you're new to a more helpful atmosphere. You can move laterally but moving up is about as difficult here as it is anywhere. Senior management (not the customer service heads per se) can occasionally be a bit resistant to newer ideas that they didn't think of, which can be disappointing.