Pros
It's a friendly place, I felt myself very welcome, people there seem to like helping the others. I worked there for 3 years and I couldn't notice rivalry between the staffs. It's a diverse and respectful place.
Cons
People have different types of contracts and benefits even when they have the same amount of responsibility/liability and workload, it means that one person can ear a different monthly salary doing exactly the same work that others in the team. It's very unstable, most of the contracts are for specified period, they can renewed but it isn't so assured. Also, there isn't career path, the salary can increase each year, but if you aren't interested in apply for others positions, you can go on retirement at the same position that you started, can you imagine retire as an assistant?