I was interviewed by 2 employees, and there was a true-to-scale 3D print of the product that they were working on in the room. I struggled to get into the building because there is not an easy way to get in if you don't have a card and they can't see you (I would recommend trying to enter at least 10-15 mins before the interview). Once I managed to get in, everyone was quite friendly and I felt regular nerves during the interview, but they didn't make me more anxious.