I declined their offer because I would not want to work in this office. The interviewers were stone-faced and not interested in expanding their team. I even went to the bathroom between interviews and overheard two interviewers talking badly about another candidate there. This is very unprofessional and sets a bias against the candidate. The interview process was an easy technical phone screen followed by an on-site interview. The on-site was four separate 45-min interviews with a 15-min break between. Three of the four were coding questions and the last was a conversation with the hiring manager.