MMR Research Worldwide Trainee Research Executive interview questions

I interviewed for the position at MMR Shanghai. I had one screening call with an HR based in UK. She was friendly and professional with timely followup and effective feedback. However my experience with the Shanghai office was terrible. I interviewed with the head of the office and another member from the team. The interview lasted for one hour and a half. I was not even offered a bottle of water. The office itself looked terrible as well. Everyone looked so beat to me and the office was a mess.