First with the positives:
The interview was excellent. All the interviewers were smart, fun to talk to, and ambitious.
Coming to the negatives:
The process was too slow. I had to send a few reminder mails to keep things on track. By the end of it, I was conflicted about my interest in the company. They finally made a paltry offer, and had an apathetic attitude towards negotiation. I thought it best to decline.