I was most interested in working at a firm where I fit with the culture and could make true friends with my co-workers. I wanted to work somewhere that incorporated 'fun' aspects that incorporated team features. I have always performed best from a team point of view.
The chill interview sometimes is good or bad. Because you could share your experience based on your preferences and logic but you could also easily lose the focus. Therefore, I think the key is to firstly, get really familiar to your resume and secondly, always remember you are selling yourself, relating your stories with the abilities and skills the job needs!