Come in, make yourself comfortable. Then the series of questions about the study background, experience in hospitality, stress-resistance (still remember this question). All questions from my side were honestly (as for now) replied. Very impressive office, takes the breath away. So, after all the interview is at the very high level from their side. Hiring manager may try to get you out of your comfort zone. For example, by being late, but you will understand later - in here you are never late.
Later, I was waiting for 10 days or so, got the call from the main recruiter. Be prepared to fill out quite a few forms and docs before get started.
Experience: challenging when they want to be, depends on the context of the job position and on the hiring manager. Just remember, nobody likes people being stressed out.