Pros
Pantry, seeing and meeting people due to the special "design" of the work environment, sunlight in the buildings, good work-life balance. Good opportunities to make impact with your work and get to know many people, but don't expect your good work and sweat to get you a promotion or anywhere meaningful.
Cons
Certainly not a place to have a career. Flat organizational structure has its pros and cons. Culture can be very petty. They promote "lifers" to managerial positions, some of whom are seriously not employable elsewhere. Great place to work right out of college, but not after 30. Pay is not very competitive, but they will pay more to someone else to do the same job when hiring from outside. Once you're in the company, you virtually have no place for negotiating salary unless you have an offer from somewhere else. Once you resign, you need to vacate the premises immediately after HR interview which appears to be about checking boxes and more employee surveys.