Amazon Sr. Project Manager interview questions

4 phone interviews with HR, Manager, 2 peers. One entire day spent at main office with 7 in person interviews. Manager, and other senior team members who I would be working with and one VP. Each about 45 minutes to 1 hour. No questions about my background or experience. Each person had about 4 situational questions to ask. I thought some were odd. Some required math skills. They were friendly but it was intense. I walked away with absolutely no indication of how I did or if the answers were what they wanted to hear. The surroundings were modest and not very well kept. I expected the offices to be nicer. Perhaps when they move to their new headquarters in a year or two things will improve.