It's a very laid back environment, which is nice sometimes, but if you're more on the driven side, it can be demotivating at times.
The onsite amenities are very good. We have a subsidized cafeteria, great gym/weight room/sauna/hot tub/locker room, and everyone has their own office with standing chairs.
The most important thing for me is working directly with people that I enjoy being around and that I share something in common with. I have that here, but not always with people that I work directly with.